56143660 has 24 divisors (see below), whose sum is σ = 118238400. Its totient is φ = 22393344.

The previous prime is 56143627. The next prime is 56143663. The reversal of 56143660 is 6634165.

It is a super-2 number, since 2×56143660² = 6304221116391200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56143663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3516 + ... + 11164.

It is an arithmetic number, because the mean of its divisors is an integer number (4926600).

Almost surely, 2^56143660 is an apocalyptic number.

It is an amenable number.

56143660 is an abundant number, since it is smaller than the sum of its proper divisors (62094740).

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

56143660 is a wasteful number, since it uses less digits than its factorization.

56143660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025 (or 8023 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 56143660 is about 7492.9073129193. The cubic root of 56143660 is about 382.9131139727.

The spelling of 56143660 in words is "fifty-six million, one hundred forty-three thousand, six hundred sixty".