56887947 has 32 divisors (see below), whose sum is σ = 88911360. Its totient is φ = 35877600.

The previous prime is 56887939. The next prime is 56887949. The reversal of 56887947 is 74978865.

56887947 is a `hidden beast` number, since 568 + 8 + 79 + 4 + 7 = 666.

It is not a de Polignac number, because 56887947 - 2³ = 56887939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56887893 and 56887902.

It is not an unprimeable number, because it can be changed into a prime (56887949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62268 + ... + 63174.

It is an arithmetic number, because the mean of its divisors is an integer number (2778480).

Almost surely, 2^56887947 is an apocalyptic number.

56887947 is a deficient number, since it is larger than the sum of its proper divisors (32023413).

56887947 is a wasteful number, since it uses less digits than its factorization.

56887947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1034 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 56887947 is about 7542.4098933961. The cubic root of 56887947 is about 384.5977628429.

The spelling of 56887947 in words is "fifty-six million, eight hundred eighty-seven thousand, nine hundred forty-seven".