56501013 has 16 divisors (see below), whose sum is σ = 79920000. Its totient is φ = 35383296.

The previous prime is 56500963. The next prime is 56501023. The reversal of 56501013 is 31010565.

It is a happy number.

56501013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56501013 - 2⁸ = 56500757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56501023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44613 + ... + 45861.

It is an arithmetic number, because the mean of its divisors is an integer number (4995000).

Almost surely, 2^56501013 is an apocalyptic number.

It is an amenable number.

56501013 is a deficient number, since it is larger than the sum of its proper divisors (23418987).

56501013 is a wasteful number, since it uses less digits than its factorization.

56501013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 56501013 is about 7516.7155726421. The cubic root of 56501013 is about 383.7238072005.

Adding to 56501013 its reverse (31010565), we get a palindrome (87511578).

The spelling of 56501013 in words is "fifty-six million, five hundred one thousand, thirteen".