56012621 has 8 divisors (see below), whose sum is σ = 64059840. Its totient is φ = 47976768.

The previous prime is 56012611. The next prime is 56012623. The reversal of 56012621 is 12621065.

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

It is a de Polignac number, because none of the positive numbers 2^k-56012621 is a prime.

It is a super-2 number, since 2×56012621² = 6274827422579282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56012623) 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, 16730 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (8007480).

Almost surely, 2^56012621 is an apocalyptic number.

It is an amenable number.

56012621 is a deficient number, since it is larger than the sum of its proper divisors (8047219).

56012621 is a wasteful number, since it uses less digits than its factorization.

56012621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 56012621 is about 7484.1580020734. The cubic root of 56012621 is about 382.6149761865.

Adding to 56012621 its reverse (12621065), we get a palindrome (68633686).

The spelling of 56012621 in words is "fifty-six million, twelve thousand, six hundred twenty-one".