56138613 has 8 divisors (see below), whose sum is σ = 77266176. Its totient is φ = 36218400.

The previous prime is 56138603. The next prime is 56138639. The reversal of 56138613 is 31683165.

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

It is not a de Polignac number, because 56138613 - 2⁶ = 56138549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56138603) 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, 301728 + ... + 301913.

It is an arithmetic number, because the mean of its divisors is an integer number (9658272).

Almost surely, 2^56138613 is an apocalyptic number.

It is an amenable number.

56138613 is a deficient number, since it is larger than the sum of its proper divisors (21127563).

56138613 is a wasteful number, since it uses less digits than its factorization.

56138613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603675.

The product of its digits is 12960, while the sum is 33.

The square root of 56138613 is about 7492.5705201886. The cubic root of 56138613 is about 382.9016397155.

The spelling of 56138613 in words is "fifty-six million, one hundred thirty-eight thousand, six hundred thirteen".