56517140 has 12 divisors (see below), whose sum is σ = 118686036. Its totient is φ = 22606848.

The previous prime is 56517121. The next prime is 56517157. The reversal of 56517140 is 4171565.

It can be written as a sum of positive squares in 2 ways, for example, as 36554116 + 19963024 = 6046^2 + 4468^2 .

It is a super-2 number, since 2×56517140² = 6388374227559200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412909 + ... + 1412948.

It is an arithmetic number, because the mean of its divisors is an integer number (9890503).

Almost surely, 2^56517140 is an apocalyptic number.

It is an amenable number.

56517140 is an abundant number, since it is smaller than the sum of its proper divisors (62168896).

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

56517140 is a wasteful number, since it uses less digits than its factorization.

56517140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825866 (or 2825864 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 56517140 is about 7517.7882385712. The cubic root of 56517140 is about 383.7603122991.

The spelling of 56517140 in words is "fifty-six million, five hundred seventeen thousand, one hundred forty".