55870900 has 36 divisors (see below), whose sum is σ = 121737868. Its totient is φ = 22256640.

The previous prime is 55870879. The next prime is 55870909. The reversal of 55870900 is 907855.

It can be written as a sum of positive squares in 6 ways, for example, as 933156 + 54937744 = 966^2 + 7412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55870909) 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, 26692 + ... + 28708.

Almost surely, 2^55870900 is an apocalyptic number.

55870900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55870900 is an abundant number, since it is smaller than the sum of its proper divisors (65866968).

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

55870900 is a wasteful number, since it uses less digits than its factorization.

55870900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2301 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 55870900 is about 7474.6839398064. The cubic root of 55870900 is about 382.2920110358.

The spelling of 55870900 in words is "fifty-five million, eight hundred seventy thousand, nine hundred".