56031261 has 32 divisors (see below), whose sum is σ = 88327680. Its totient is φ = 31147200.

The previous prime is 56031251. The next prime is 56031263. The reversal of 56031261 is 16213065.

It is not a de Polignac number, because 56031261 - 2¹⁹ = 55506973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56031263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90210 + ... + 90828.

It is an arithmetic number, because the mean of its divisors is an integer number (2760240).

Almost surely, 2^56031261 is an apocalyptic number.

It is an amenable number.

56031261 is a deficient number, since it is larger than the sum of its proper divisors (32296419).

56031261 is a wasteful number, since it uses less digits than its factorization.

56031261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 56031261 is about 7485.4031955533. The cubic root of 56031261 is about 382.6574139565.

The spelling of 56031261 in words is "fifty-six million, thirty-one thousand, two hundred sixty-one".