56657345 has 8 divisors (see below), whose sum is σ = 71988264. Its totient is φ = 42659584.

The previous prime is 56657339. The next prime is 56657351. The reversal of 56657345 is 54375665.

It is an interprime number because it is at equal distance from previous prime (56657339) and next prime (56657351).

It can be written as a sum of positive squares in 4 ways, for example, as 26142769 + 30514576 = 5113^2 + 5524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56657345 - 2⁶ = 56657281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333194 + ... + 333363.

It is an arithmetic number, because the mean of its divisors is an integer number (8998533).

Almost surely, 2^56657345 is an apocalyptic number.

It is an amenable number.

56657345 is a deficient number, since it is larger than the sum of its proper divisors (15330919).

56657345 is a wasteful number, since it uses less digits than its factorization.

56657345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666579.

The product of its digits is 378000, while the sum is 41.

The square root of 56657345 is about 7527.1073461191. The cubic root of 56657345 is about 384.0773882837.

The spelling of 56657345 in words is "fifty-six million, six hundred fifty-seven thousand, three hundred forty-five".