55345912 has 48 divisors (see below), whose sum is σ = 112248720. Its totient is φ = 25534080.

The previous prime is 55345909. The next prime is 55345919. The reversal of 55345912 is 21954355.

It is a super-2 number, since 2×55345912² = 6126339950223488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55345919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176668 + ... + 176980.

It is an arithmetic number, because the mean of its divisors is an integer number (2338515).

Almost surely, 2^55345912 is an apocalyptic number.

It is an amenable number.

55345912 is an abundant number, since it is smaller than the sum of its proper divisors (56902808).

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

55345912 is a wasteful number, since it uses less digits than its factorization.

55345912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 369 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 55345912 is about 7439.4833153923. The cubic root of 55345912 is about 381.0908452597.

The spelling of 55345912 in words is "fifty-five million, three hundred forty-five thousand, nine hundred twelve".