51284623 has 8 divisors (see below), whose sum is σ = 55285328. Its totient is φ = 47291904.

The previous prime is 51284603. The next prime is 51284647. The reversal of 51284623 is 32648215.

51284623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51284623 - 2²¹ = 49187471 is a prime.

It is a super-2 number, since 2×51284623² = 5260225112504258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51284603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23215 + ... + 25327.

It is an arithmetic number, because the mean of its divisors is an integer number (6910666).

Almost surely, 2^51284623 is an apocalyptic number.

51284623 is a deficient number, since it is larger than the sum of its proper divisors (4000705).

51284623 is a wasteful number, since it uses less digits than its factorization.

51284623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its digits is 11520, while the sum is 31.

The square root of 51284623 is about 7161.3282985770. The cubic root of 51284623 is about 371.5315696957.

The spelling of 51284623 in words is "fifty-one million, two hundred eighty-four thousand, six hundred twenty-three".