56977947 has 12 divisors (see below), whose sum is σ = 88632544. Its totient is φ = 35063280.

The previous prime is 56977937. The next prime is 56977957. The reversal of 56977947 is 74977965.

It is a happy number.

56977947 is a `hidden beast` number, since 569 + 7 + 79 + 4 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (56977937) and next prime (56977957).

It is not a de Polignac number, because 56977947 - 2⁶ = 56977883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56977893 and 56977902.

It is not an unprimeable number, because it can be changed into a prime (56977937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243379 + ... + 243612.

Almost surely, 2^56977947 is an apocalyptic number.

56977947 is a deficient number, since it is larger than the sum of its proper divisors (31654597).

56977947 is a wasteful number, since it uses less digits than its factorization.

56977947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487010 (or 487007 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 56977947 is about 7548.3737983754. The cubic root of 56977947 is about 384.8004745644.

The spelling of 56977947 in words is "fifty-six million, nine hundred seventy-seven thousand, nine hundred forty-seven".