56640130 has 8 divisors (see below), whose sum is σ = 101952252. Its totient is φ = 22656048.

The previous prime is 56640127. The next prime is 56640163. The reversal of 56640130 is 3104665.

It can be written as a sum of positive squares in 2 ways, for example, as 49463089 + 7177041 = 7033^2 + 2679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 56640095 and 56640104.

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, 2831997 + ... + 2832016.

Almost surely, 2^56640130 is an apocalyptic number.

56640130 is a deficient number, since it is larger than the sum of its proper divisors (45312122).

56640130 is a wasteful number, since it uses less digits than its factorization.

56640130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664020.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 56640130 is about 7525.9637256633. The cubic root of 56640130 is about 384.0384844604.

Adding to 56640130 its reverse (3104665), we get a palindrome (59744795).

The spelling of 56640130 in words is "fifty-six million, six hundred forty thousand, one hundred thirty".