56956559 has 4 divisors (see below), whose sum is σ = 62134440. Its totient is φ = 51778680.

The previous prime is 56956513. The next prime is 56956567. The reversal of 56956559 is 95565965.

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 56956559 - 2¹² = 56952463 is a prime.

It is a super-2 number, since 2×56956559² = 6488099226240962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56926559) 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, 2588924 + ... + 2588945.

It is an arithmetic number, because the mean of its divisors is an integer number (15533610).

Almost surely, 2^56956559 is an apocalyptic number.

56956559 is a deficient number, since it is larger than the sum of its proper divisors (5177881).

56956559 is a wasteful number, since it uses less digits than its factorization.

56956559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177880.

The product of its digits is 1822500, while the sum is 50.

The square root of 56956559 is about 7546.9569364082. The cubic root of 56956559 is about 384.7523205973.

The spelling of 56956559 in words is "fifty-six million, nine hundred fifty-six thousand, five hundred fifty-nine".