56621410 has 16 divisors (see below), whose sum is σ = 104405112. Its totient is φ = 22096000.

The previous prime is 56621401. The next prime is 56621413. The reversal of 56621410 is 1412665.

It can be written as a sum of positive squares in 4 ways, for example, as 16184529 + 40436881 = 4023^2 + 6359^2 .

It is not an unprimeable number, because it can be changed into a prime (56621413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68641 + ... + 69460.

Almost surely, 2^56621410 is an apocalyptic number.

56621410 is a deficient number, since it is larger than the sum of its proper divisors (47783702).

56621410 is a wasteful number, since it uses less digits than its factorization.

56621410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138149.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 56621410 is about 7524.7199283428. The cubic root of 56621410 is about 383.9961705709.

The spelling of 56621410 in words is "fifty-six million, six hundred twenty-one thousand, four hundred ten".