56817427 has 4 divisors (see below), whose sum is σ = 56836296. Its totient is φ = 56798560.

The previous prime is 56817421. The next prime is 56817457. The reversal of 56817427 is 72471865.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56817427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56817427.

It is not an unprimeable number, because it can be changed into a prime (56817421) 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, 3793 + ... + 11314.

It is an arithmetic number, because the mean of its divisors is an integer number (14209074).

Almost surely, 2^56817427 is an apocalyptic number.

56817427 is a deficient number, since it is larger than the sum of its proper divisors (18869).

56817427 is a wasteful number, since it uses less digits than its factorization.

56817427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18868.

The product of its digits is 94080, while the sum is 40.

The square root of 56817427 is about 7537.7335453039. The cubic root of 56817427 is about 384.4387775018.

The spelling of 56817427 in words is "fifty-six million, eight hundred seventeen thousand, four hundred twenty-seven".