56143930 has 16 divisors (see below), whose sum is σ = 101504520. Its totient is φ = 22358592.

The previous prime is 56143909. The next prime is 56143933. The reversal of 56143930 is 3934165.

It can be written as a sum of positive squares in 4 ways, for example, as 49378729 + 6765201 = 7027^2 + 2601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56143892 and 56143901.

It is not an unprimeable number, because it can be changed into a prime (56143933) 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, 9969 + ... + 14548.

Almost surely, 2^56143930 is an apocalyptic number.

56143930 is a deficient number, since it is larger than the sum of its proper divisors (45360590).

56143930 is a wasteful number, since it uses less digits than its factorization.

56143930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24753.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 56143930 is about 7492.9253299362. The cubic root of 56143930 is about 382.9137277932.

The spelling of 56143930 in words is "fifty-six million, one hundred forty-three thousand, nine hundred thirty".