56857651 has 4 divisors (see below), whose sum is σ = 57821400. Its totient is φ = 55893904.

The previous prime is 56857649. The next prime is 56857657. The reversal of 56857651 is 15675865.

56857651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56857651 - 2¹ = 56857649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56857598 and 56857607.

It is not an unprimeable number, because it can be changed into a prime (56857657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481786 + ... + 481903.

It is an arithmetic number, because the mean of its divisors is an integer number (14455350).

Almost surely, 2^56857651 is an apocalyptic number.

56857651 is a deficient number, since it is larger than the sum of its proper divisors (963749).

56857651 is an equidigital number, since it uses as much as digits as its factorization.

56857651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963748.

The product of its digits is 252000, while the sum is 43.

The square root of 56857651 is about 7540.4012492705. The cubic root of 56857651 is about 384.5294774769.

The spelling of 56857651 in words is "fifty-six million, eight hundred fifty-seven thousand, six hundred fifty-one".