56645130 has 16 divisors (see below), whose sum is σ = 135948384. Its totient is φ = 15105360.

The previous prime is 56645123. The next prime is 56645131. The reversal of 56645130 is 3154665.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1888171 = 56645130 / (5 + 6 + 6 + 4 + 5 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (56645131) 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, 944056 + ... + 944115.

It is an arithmetic number, because the mean of its divisors is an integer number (8496774).

Almost surely, 2^56645130 is an apocalyptic number.

56645130 is an abundant number, since it is smaller than the sum of its proper divisors (79303254).

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

56645130 is a wasteful number, since it uses less digits than its factorization.

56645130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888181.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56645130 is about 7526.2959017036. The cubic root of 56645130 is about 384.0497846694.

Adding to 56645130 its reverse (3154665), we get a palindrome (59799795).

The spelling of 56645130 in words is "fifty-six million, six hundred forty-five thousand, one hundred thirty".