56213739 has 12 divisors (see below), whose sum is σ = 82925856. Its totient is φ = 36678192.

The previous prime is 56213701. The next prime is 56213749. The reversal of 56213739 is 93731265.

It is a de Polignac number, because none of the positive numbers 2^k-56213739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56213749) 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, 66024 + ... + 66869.

It is an arithmetic number, because the mean of its divisors is an integer number (6910488).

Almost surely, 2^56213739 is an apocalyptic number.

56213739 is a deficient number, since it is larger than the sum of its proper divisors (26712117).

56213739 is a wasteful number, since it uses less digits than its factorization.

56213739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132946 (or 132943 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 56213739 is about 7497.5822102862. The cubic root of 56213739 is about 383.0723662135.

The spelling of 56213739 in words is "fifty-six million, two hundred thirteen thousand, seven hundred thirty-nine".