56115213 has 16 divisors (see below), whose sum is σ = 93282816. Its totient is φ = 29150640.

The previous prime is 56115197. The next prime is 56115217. The reversal of 56115213 is 31251165.

It is not a de Polignac number, because 56115213 - 2⁴ = 56115197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56115217) 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, 121231 + ... + 121692.

It is an arithmetic number, because the mean of its divisors is an integer number (5830176).

Almost surely, 2^56115213 is an apocalyptic number.

It is an amenable number.

56115213 is a deficient number, since it is larger than the sum of its proper divisors (37167603).

56115213 is a wasteful number, since it uses less digits than its factorization.

56115213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242944.

The product of its digits is 900, while the sum is 24.

The square root of 56115213 is about 7491.0088105675. The cubic root of 56115213 is about 382.8484312785.

Adding to 56115213 its reverse (31251165), we get a palindrome (87366378).

It can be divided in two parts, 561152 and 13, that added together give a palindrome (561165).

The spelling of 56115213 in words is "fifty-six million, one hundred fifteen thousand, two hundred thirteen".