56879785 has 4 divisors (see below), whose sum is σ = 68255748. Its totient is φ = 45503824.

The previous prime is 56879783. The next prime is 56879789. The reversal of 56879785 is 58797865.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18983449 + 37896336 = 4357^2 + 6156^2 .

It is a cyclic number.

It is not a de Polignac number, because 56879785 - 2¹ = 56879783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56879783) 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, 5687974 + ... + 5687983.

It is an arithmetic number, because the mean of its divisors is an integer number (17063937).

Almost surely, 2^56879785 is an apocalyptic number.

It is an amenable number.

56879785 is a deficient number, since it is larger than the sum of its proper divisors (11375963).

56879785 is a wasteful number, since it uses less digits than its factorization.

56879785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375962.

The product of its digits is 4233600, while the sum is 55.

The square root of 56879785 is about 7541.8688002378. The cubic root of 56879785 is about 384.5793685711.

The spelling of 56879785 in words is "fifty-six million, eight hundred seventy-nine thousand, seven hundred eighty-five".