56732013 has 24 divisors (see below), whose sum is σ = 89707800. Its totient is φ = 34335360.

The previous prime is 56731999. The next prime is 56732021. The reversal of 56732013 is 31023765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 751689 + 55980324 = 867^2 + 7482^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56732013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56732113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3163 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (3737825).

Almost surely, 2^56732013 is an apocalyptic number.

It is an amenable number.

56732013 is a deficient number, since it is larger than the sum of its proper divisors (32975787).

56732013 is a wasteful number, since it uses less digits than its factorization.

56732013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029 (or 8026 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 56732013 is about 7532.0656529268. The cubic root of 56732013 is about 384.2460377994.

Adding to 56732013 its reverse (31023765), we get a palindrome (87755778).

The spelling of 56732013 in words is "fifty-six million, seven hundred thirty-two thousand, thirteen".