56191597 has 8 divisors (see below), whose sum is σ = 70057152. Its totient is φ = 43785600.

The previous prime is 56191573. The next prime is 56191609. The reversal of 56191597 is 79519165.

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

It is a cyclic number.

It is not a de Polignac number, because 56191597 - 2⁷ = 56191469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56191517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364804 + ... + 364957.

It is an arithmetic number, because the mean of its divisors is an integer number (8757144).

Almost surely, 2^56191597 is an apocalyptic number.

It is an amenable number.

56191597 is a deficient number, since it is larger than the sum of its proper divisors (13865555).

56191597 is a wasteful number, since it uses less digits than its factorization.

56191597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729779.

The product of its digits is 85050, while the sum is 43.

The square root of 56191597 is about 7496.1054555015. The cubic root of 56191597 is about 383.0220635509.

The spelling of 56191597 in words is "fifty-six million, one hundred ninety-one thousand, five hundred ninety-seven".