56091597 has 8 divisors (see below), whose sum is σ = 77367840. Its totient is φ = 36104880.

The previous prime is 56091589. The next prime is 56091599. The reversal of 56091597 is 79519065.

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

It is not a de Polignac number, because 56091597 - 2³ = 56091589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56091599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322279 + ... + 322452.

It is an arithmetic number, because the mean of its divisors is an integer number (9670980).

Almost surely, 2^56091597 is an apocalyptic number.

It is an amenable number.

56091597 is a deficient number, since it is larger than the sum of its proper divisors (21276243).

56091597 is a wasteful number, since it uses less digits than its factorization.

56091597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644763.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 56091597 is about 7489.4323549919. The cubic root of 56091597 is about 382.7947166872.

The spelling of 56091597 in words is "fifty-six million, ninety-one thousand, five hundred ninety-seven".