55157032 has 16 divisors (see below), whose sum is σ = 118193760. Its totient is φ = 23638704.

The previous prime is 55157021. The next prime is 55157033. The reversal of 55157032 is 23075155.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (55157033) 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, 492418 + ... + 492529.

It is an arithmetic number, because the mean of its divisors is an integer number (7387110).

Almost surely, 2^55157032 is an apocalyptic number.

It is an amenable number.

55157032 is an abundant number, since it is smaller than the sum of its proper divisors (63036728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55157032 is a wasteful number, since it uses less digits than its factorization.

55157032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984960 (or 984956 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 55157032 is about 7426.7780362685. The cubic root of 55157032 is about 380.6568326119.

The spelling of 55157032 in words is "fifty-five million, one hundred fifty-seven thousand, thirty-two".