56874861 has 6 divisors (see below), whose sum is σ = 82152590. Its totient is φ = 37916568.

The previous prime is 56874859. The next prime is 56874869. The reversal of 56874861 is 16847865.

It is a happy number.

56874861 is a `hidden beast` number, since 568 + 7 + 4 + 86 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 4384836 = 7245^2 + 2094^2 .

It is not a de Polignac number, because 56874861 - 2¹ = 56874859 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 (56874869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3159706 + ... + 3159723.

Almost surely, 2^56874861 is an apocalyptic number.

It is an amenable number.

56874861 is a deficient number, since it is larger than the sum of its proper divisors (25277729).

56874861 is a wasteful number, since it uses less digits than its factorization.

56874861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6319435 (or 6319432 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 56874861 is about 7541.5423488833. The cubic root of 56874861 is about 384.5682707592.

The spelling of 56874861 in words is "fifty-six million, eight hundred seventy-four thousand, eight hundred sixty-one".