55831856 has 20 divisors (see below), whose sum is σ = 112878192. Its totient is φ = 26702016.

The previous prime is 55831849. The next prime is 55831921. The reversal of 55831856 is 65813855.

It is a super-2 number, since 2×55831856² = 6234392288809472, which contains 22 as substring.

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, 75491 + ... + 76226.

Almost surely, 2^55831856 is an apocalyptic number.

It is an amenable number.

55831856 is an abundant number, since it is smaller than the sum of its proper divisors (57046336).

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

55831856 is a wasteful number, since it uses less digits than its factorization.

55831856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151748 (or 151742 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 55831856 is about 7472.0717341310. The cubic root of 55831856 is about 382.2029385039.

The spelling of 55831856 in words is "fifty-five million, eight hundred thirty-one thousand, eight hundred fifty-six".