55685292 has 48 divisors (see below), whose sum is σ = 140404992. Its totient is φ = 17075520.

The previous prime is 55685291. The next prime is 55685297. The reversal of 55685292 is 29258655.

It is not an unprimeable number, because it can be changed into a prime (55685291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76233 + ... + 76959.

It is an arithmetic number, because the mean of its divisors is an integer number (2925104).

Almost surely, 2^55685292 is an apocalyptic number.

55685292 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55685292 is an abundant number, since it is smaller than the sum of its proper divisors (84719700).

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

55685292 is a wasteful number, since it uses less digits than its factorization.

55685292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The square root of 55685292 is about 7462.2578352667. The cubic root of 55685292 is about 381.8682055877.

The spelling of 55685292 in words is "fifty-five million, six hundred eighty-five thousand, two hundred ninety-two".