55497900 has 36 divisors (see below), whose sum is σ = 160574792. Its totient is φ = 14799360.

The previous prime is 55497899. The next prime is 55497947. The reversal of 55497900 is 979455.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92197 + ... + 92796.

Almost surely, 2^55497900 is an apocalyptic number.

55497900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55497900 is an abundant number, since it is smaller than the sum of its proper divisors (105076892).

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

55497900 is a wasteful number, since it uses less digits than its factorization.

55497900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185010 (or 185003 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 55497900 is about 7449.6912687708. The cubic root of 55497900 is about 381.4393702243.

The spelling of 55497900 in words is "fifty-five million, four hundred ninety-seven thousand, nine hundred".