56992591 has 4 divisors (see below), whose sum is σ = 57334032. Its totient is φ = 56651152.

The previous prime is 56992589. The next prime is 56992613. The reversal of 56992591 is 19529965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56992591 - 2¹ = 56992589 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 (56992541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170470 + ... + 170803.

It is an arithmetic number, because the mean of its divisors is an integer number (14333508).

Almost surely, 2^56992591 is an apocalyptic number.

56992591 is a deficient number, since it is larger than the sum of its proper divisors (341441).

56992591 is a wasteful number, since it uses less digits than its factorization.

56992591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341440.

The product of its digits is 218700, while the sum is 46.

The square root of 56992591 is about 7549.3437463133. The cubic root of 56992591 is about 384.8334378175.

The spelling of 56992591 in words is "fifty-six million, nine hundred ninety-two thousand, five hundred ninety-one".