56520705 has 16 divisors (see below), whose sum is σ = 92537280. Its totient is φ = 29443008.

The previous prime is 56520703. The next prime is 56520707. The reversal of 56520705 is 50702565.

It is an interprime number because it is at equal distance from previous prime (56520703) and next prime (56520707).

It is not a de Polignac number, because 56520705 - 2¹ = 56520703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56520701) 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 15 ways as a sum of consecutive naturals, for example, 43170 + ... + 44459.

It is an arithmetic number, because the mean of its divisors is an integer number (5783580).

Almost surely, 2^56520705 is an apocalyptic number.

It is an amenable number.

56520705 is a deficient number, since it is larger than the sum of its proper divisors (36016575).

56520705 is a wasteful number, since it uses less digits than its factorization.

56520705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87680.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 56520705 is about 7518.0253391433. The cubic root of 56520705 is about 383.7683811006.

The spelling of 56520705 in words is "fifty-six million, five hundred twenty thousand, seven hundred five".