56137261 has 4 divisors (see below), whose sum is σ = 57088800. Its totient is φ = 55185724.

The previous prime is 56137259. The next prime is 56137271. The reversal of 56137261 is 16273165.

56137261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56137261 - 2¹ = 56137259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56137271) 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 3 ways as a sum of consecutive naturals, for example, 475681 + ... + 475798.

It is an arithmetic number, because the mean of its divisors is an integer number (14272200).

Almost surely, 2^56137261 is an apocalyptic number.

It is an amenable number.

56137261 is a deficient number, since it is larger than the sum of its proper divisors (951539).

56137261 is an equidigital number, since it uses as much as digits as its factorization.

56137261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951538.

The product of its digits is 7560, while the sum is 31.

The square root of 56137261 is about 7492.4802969377. The cubic root of 56137261 is about 382.8985658527.

The spelling of 56137261 in words is "fifty-six million, one hundred thirty-seven thousand, two hundred sixty-one".