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554542031 = 2919122139
BaseRepresentation
bin100001000011011…
…010001111001111
31102122110122122202
4201003122033033
52113430321111
6131005432115
716512346421
oct4103321717
91378418582
10554542031
1126502a6aa
1213586b63b
138ab709a4
1453912811
1533a3db3b
hex210da3cf

554542031 has 4 divisors (see below), whose sum is σ = 573664200. Its totient is φ = 535419864.

The previous prime is 554542019. The next prime is 554542039. The reversal of 554542031 is 130245455.

554542031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130245455 = 526049091.

It is a cyclic number.

It is not a de Polignac number, because 554542031 - 222 = 550347727 is a prime.

It is a super-2 number, since 2×5545420312 = 615033728291209922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 19122139 = 554542031 / (5 + 5 + 4 + 5 + 4 + 2 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 554541985 and 554542003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554542039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9561041 + ... + 9561098.

It is an arithmetic number, because the mean of its divisors is an integer number (143416050).

Almost surely, 2554542031 is an apocalyptic number.

554542031 is a deficient number, since it is larger than the sum of its proper divisors (19122169).

554542031 is a wasteful number, since it uses less digits than its factorization.

554542031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19122168.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 554542031 is about 23548.7161221159. The cubic root of 554542031 is about 821.5704738310.

Adding to 554542031 its reverse (130245455), we get a palindrome (684787486).

The spelling of 554542031 in words is "five hundred fifty-four million, five hundred forty-two thousand, thirty-one".

Divisors: 1 29 19122139 554542031