42550545 has 8 divisors (see below), whose sum is σ = 68080896. Its totient is φ = 22693616.

The previous prime is 42550537. The next prime is 42550549. The reversal of 42550545 is 54505524.

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 42550545 - 2³ = 42550537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42550549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418337 + ... + 1418366.

It is an arithmetic number, because the mean of its divisors is an integer number (8510112).

Almost surely, 2^42550545 is an apocalyptic number.

It is an amenable number.

42550545 is a deficient number, since it is larger than the sum of its proper divisors (25530351).

42550545 is a wasteful number, since it uses less digits than its factorization.

42550545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836711.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 42550545 is about 6523.0778778120. The cubic root of 42550545 is about 349.1148928107.

The spelling of 42550545 in words is "forty-two million, five hundred fifty thousand, five hundred forty-five".