56742985 has 16 divisors (see below), whose sum is σ = 73566864. Its totient is φ = 41766912.

The previous prime is 56742979. The next prime is 56743021. The reversal of 56742985 is 58924765.

It can be written as a sum of positive squares in 8 ways, for example, as 1923769 + 54819216 = 1387^2 + 7404^2 .

It is a cyclic number.

It is not a de Polignac number, because 56742985 - 2¹³ = 56734793 is a prime.

It is a Duffinian 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, 21709 + ... + 24181.

It is an arithmetic number, because the mean of its divisors is an integer number (4597929).

Almost surely, 2^56742985 is an apocalyptic number.

It is an amenable number.

56742985 is a deficient number, since it is larger than the sum of its proper divisors (16823879).

56742985 is a wasteful number, since it uses less digits than its factorization.

56742985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844.

The product of its digits is 604800, while the sum is 46.

The square root of 56742985 is about 7532.7939703672. The cubic root of 56742985 is about 384.2708073287.

The spelling of 56742985 in words is "fifty-six million, seven hundred forty-two thousand, nine hundred eighty-five".