56977615 has 16 divisors (see below), whose sum is σ = 69366528. Its totient is φ = 44925696.

The previous prime is 56977603. The next prime is 56977621. The reversal of 56977615 is 51677965.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56977615 - 2⁹ = 56977103 is a prime.

It is a super-2 number, since 2×56977615² = 6492897222176450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152569 + ... + 152941.

It is an arithmetic number, because the mean of its divisors is an integer number (4335408).

Almost surely, 2^56977615 is an apocalyptic number.

56977615 is a deficient number, since it is larger than the sum of its proper divisors (12388913).

56977615 is a wasteful number, since it uses less digits than its factorization.

56977615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738.

The product of its digits is 396900, while the sum is 46.

The square root of 56977615 is about 7548.3518068516. The cubic root of 56977615 is about 384.7997271758.

The spelling of 56977615 in words is "fifty-six million, nine hundred seventy-seven thousand, six hundred fifteen".