56913213 has 16 divisors (see below), whose sum is σ = 87114240. Its totient is φ = 32375856.

The previous prime is 56913211. The next prime is 56913221. The reversal of 56913213 is 31231965.

It is not a de Polignac number, because 56913213 - 2¹ = 56913211 is a prime.

It is a super-2 number, since 2×56913213² = 6478227627966738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56913211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1203 + ... + 10736.

It is an arithmetic number, because the mean of its divisors is an integer number (5444640).

Almost surely, 2^56913213 is an apocalyptic number.

It is an amenable number.

56913213 is a deficient number, since it is larger than the sum of its proper divisors (30201027).

56913213 is a wasteful number, since it uses less digits than its factorization.

56913213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12176.

The product of its digits is 4860, while the sum is 30.

The square root of 56913213 is about 7544.0846363227. The cubic root of 56913213 is about 384.6546923529.

The spelling of 56913213 in words is "fifty-six million, nine hundred thirteen thousand, two hundred thirteen".