56851563 has 16 divisors (see below), whose sum is σ = 77534496. Its totient is φ = 37040640.

The previous prime is 56851559. The next prime is 56851579. The reversal of 56851563 is 36515865.

It is not a de Polignac number, because 56851563 - 2² = 56851559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56851523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53053 + ... + 54113.

It is an arithmetic number, because the mean of its divisors is an integer number (4845906).

Almost surely, 2^56851563 is an apocalyptic number.

56851563 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

56851563 is a deficient number, since it is larger than the sum of its proper divisors (20682933).

56851563 is a wasteful number, since it uses less digits than its factorization.

56851563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454.

The product of its digits is 108000, while the sum is 39.

The square root of 56851563 is about 7539.9975464187. The cubic root of 56851563 is about 384.5157525635.

The spelling of 56851563 in words is "fifty-six million, eight hundred fifty-one thousand, five hundred sixty-three".