56807491 has 24 divisors (see below), whose sum is σ = 64957680. Its totient is φ = 49585536.

The previous prime is 56807483. The next prime is 56807521. The reversal of 56807491 is 19470865.

It is not a de Polignac number, because 56807491 - 2³ = 56807483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56807791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328281 + ... + 328453.

It is an arithmetic number, because the mean of its divisors is an integer number (2706570).

Almost surely, 2^56807491 is an apocalyptic number.

56807491 is a deficient number, since it is larger than the sum of its proper divisors (8150189).

56807491 is a wasteful number, since it uses less digits than its factorization.

56807491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 56807491 is about 7537.0744324307. The cubic root of 56807491 is about 384.4163665000.

The spelling of 56807491 in words is "fifty-six million, eight hundred seven thousand, four hundred ninety-one".