56163571 has 4 divisors (see below), whose sum is σ = 56446000. Its totient is φ = 55881144.

The previous prime is 56163553. The next prime is 56163581. The reversal of 56163571 is 17536165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17536165 = 5 ⋅3507233.

It is a cyclic number.

It is not a de Polignac number, because 56163571 - 2¹⁵ = 56130803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56163581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140916 + ... + 141313.

It is an arithmetic number, because the mean of its divisors is an integer number (14111500).

Almost surely, 2^56163571 is an apocalyptic number.

56163571 is a deficient number, since it is larger than the sum of its proper divisors (282429).

56163571 is a wasteful number, since it uses less digits than its factorization.

56163571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282428.

The product of its digits is 18900, while the sum is 34.

The square root of 56163571 is about 7494.2358516396. The cubic root of 56163571 is about 382.9583745412.

The spelling of 56163571 in words is "fifty-six million, one hundred sixty-three thousand, five hundred seventy-one".