55157952 has 28 divisors (see below), whose sum is σ = 145939256. Its totient is φ = 18385920.

The previous prime is 55157941. The next prime is 55157987. The reversal of 55157952 is 25975155.

It is a self number, because there is not a number n which added to its sum of digits gives 55157952.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143449 + ... + 143832.

Almost surely, 2^55157952 is an apocalyptic number.

It is an amenable number.

55157952 is an abundant number, since it is smaller than the sum of its proper divisors (90781304).

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

55157952 is a wasteful number, since it uses less digits than its factorization.

55157952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287296 (or 287286 counting only the distinct ones).

The product of its digits is 78750, while the sum is 39.

The square root of 55157952 is about 7426.8399740401. The cubic root of 55157952 is about 380.6589490077.

The spelling of 55157952 in words is "fifty-five million, one hundred fifty-seven thousand, nine hundred fifty-two".