56572139 has 8 divisors (see below), whose sum is σ = 64130640. Its totient is φ = 49471776.

The previous prime is 56572097. The next prime is 56572163. The reversal of 56572139 is 93127565.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56572139 - 2¹⁶ = 56506603 is a prime.

It is a super-2 number, since 2×56572139² = 6400813822070642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56572339) 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, 114272 + ... + 114765.

It is an arithmetic number, because the mean of its divisors is an integer number (8016330).

Almost surely, 2^56572139 is an apocalyptic number.

56572139 is a deficient number, since it is larger than the sum of its proper divisors (7558501).

56572139 is a wasteful number, since it uses less digits than its factorization.

56572139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229069.

The product of its digits is 56700, while the sum is 38.

The square root of 56572139 is about 7521.4452733501. The cubic root of 56572139 is about 383.8847559082.

The spelling of 56572139 in words is "fifty-six million, five hundred seventy-two thousand, one hundred thirty-nine".