56554940 has 24 divisors (see below), whose sum is σ = 127901760. Its totient is φ = 20881728.

The previous prime is 56554921. The next prime is 56554951. The reversal of 56554940 is 4945565.

It is a super-2 number, since 2×56554940² = 6396922476807200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 56554894 and 56554903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108500 + ... + 109019.

It is an arithmetic number, because the mean of its divisors is an integer number (5329240).

Almost surely, 2^56554940 is an apocalyptic number.

It is an amenable number.

56554940 is an abundant number, since it is smaller than the sum of its proper divisors (71346820).

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

56554940 is a wasteful number, since it uses less digits than its factorization.

56554940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217541 (or 217539 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 56554940 is about 7520.3018556438. The cubic root of 56554940 is about 383.8458492235.

The spelling of 56554940 in words is "fifty-six million, five hundred fifty-four thousand, nine hundred forty".