56847213 has 12 divisors (see below), whose sum is σ = 82568668. Its totient is φ = 37687680.

The previous prime is 56847179. The next prime is 56847227. The reversal of 56847213 is 31274865.

It can be written as a sum of positive squares in 2 ways, for example, as 1225449 + 55621764 = 1107^2 + 7458^2 .

It is not a de Polignac number, because 56847213 - 2⁹ = 56846701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56847253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15820 + ... + 19077.

Almost surely, 2^56847213 is an apocalyptic number.

It is an amenable number.

56847213 is a deficient number, since it is larger than the sum of its proper divisors (25721455).

56847213 is a wasteful number, since it uses less digits than its factorization.

56847213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35084 (or 35081 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 56847213 is about 7539.7090792682. The cubic root of 56847213 is about 384.5059452331.

The spelling of 56847213 in words is "fifty-six million, eight hundred forty-seven thousand, two hundred thirteen".