56712211 has 4 divisors (see below), whose sum is σ = 56742424. Its totient is φ = 56682000.

The previous prime is 56712209. The next prime is 56712239. The reversal of 56712211 is 11221765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11221765 = 5 ⋅2244353.

It is a cyclic number.

It is not a de Polignac number, because 56712211 - 2¹ = 56712209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56712281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12090 + ... + 16111.

It is an arithmetic number, because the mean of its divisors is an integer number (14185606).

Almost surely, 2^56712211 is an apocalyptic number.

56712211 is a deficient number, since it is larger than the sum of its proper divisors (30213).

56712211 is a wasteful number, since it uses less digits than its factorization.

56712211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30212.

The product of its digits is 840, while the sum is 25.

The square root of 56712211 is about 7530.7510249642. The cubic root of 56712211 is about 384.2013262683.

Adding to 56712211 its reverse (11221765), we get a palindrome (67933976).

The spelling of 56712211 in words is "fifty-six million, seven hundred twelve thousand, two hundred eleven".