56271900 has 36 divisors (see below), whose sum is σ = 162814232. Its totient is φ = 15005760.

The previous prime is 56271889. The next prime is 56271947. The reversal of 56271900 is 917265.

It is a super-2 number, since 2×56271900² = 6333053459220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 93487 + ... + 94086.

Almost surely, 2^56271900 is an apocalyptic number.

56271900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56271900 is an abundant number, since it is smaller than the sum of its proper divisors (106542332).

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

56271900 is a wasteful number, since it uses less digits than its factorization.

56271900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187590 (or 187583 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 56271900 is about 7501.4598579210. The cubic root of 56271900 is about 383.2044347126.

The spelling of 56271900 in words is "fifty-six million, two hundred seventy-one thousand, nine hundred".