56837121 has 16 divisors (see below), whose sum is σ = 82798848. Its totient is φ = 34394000.

The previous prime is 56837089. The next prime is 56837141. The reversal of 56837121 is 12173865.

It is a cyclic number.

It is not a de Polignac number, because 56837121 - 2⁵ = 56837089 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (56837141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38446 + ... + 39896.

It is an arithmetic number, because the mean of its divisors is an integer number (5174928).

Almost surely, 2^56837121 is an apocalyptic number.

56837121 is the 4353-rd octagonal number.

It is an amenable number.

56837121 is a deficient number, since it is larger than the sum of its proper divisors (25961727).

56837121 is a wasteful number, since it uses less digits than its factorization.

56837121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its digits is 10080, while the sum is 33.

The square root of 56837121 is about 7539.0397929710. The cubic root of 56837121 is about 384.4831902996.

The spelling of 56837121 in words is "fifty-six million, eight hundred thirty-seven thousand, one hundred twenty-one".