55556900 has 36 divisors (see below), whose sum is σ = 137782848. Its totient is φ = 19047840.

The previous prime is 55556887. The next prime is 55556923. The reversal of 55556900 is 965555.

It is a super-2 number, since 2×55556900² = 6173138275220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 38984 + ... + 40383.

Almost surely, 2^55556900 is an apocalyptic number.

55556900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55556900 is an abundant number, since it is smaller than the sum of its proper divisors (82225948).

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

55556900 is a wasteful number, since it uses less digits than its factorization.

55556900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79388 (or 79381 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 55556900 is about 7453.6501125288. The cubic root of 55556900 is about 381.5744921690.

The spelling of 55556900 in words is "fifty-five million, five hundred fifty-six thousand, nine hundred".