56137521 has 8 divisors (see below), whose sum is σ = 81654624. Its totient is φ = 34022720.

The previous prime is 56137493. The next prime is 56137537. The reversal of 56137521 is 12573165.

56137521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56137521 - 2¹⁰ = 56136497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56137541) 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 7 ways as a sum of consecutive naturals, for example, 850536 + ... + 850601.

It is an arithmetic number, because the mean of its divisors is an integer number (10206828).

Almost surely, 2^56137521 is an apocalyptic number.

It is an amenable number.

56137521 is a deficient number, since it is larger than the sum of its proper divisors (25517103).

56137521 is a wasteful number, since it uses less digits than its factorization.

56137521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701151.

The product of its digits is 6300, while the sum is 30.

The square root of 56137521 is about 7492.4976476473. The cubic root of 56137521 is about 382.8991569840.

The spelling of 56137521 in words is "fifty-six million, one hundred thirty-seven thousand, five hundred twenty-one".