56501771 has 4 divisors (see below), whose sum is σ = 56521944. Its totient is φ = 56481600.

The previous prime is 56501719. The next prime is 56501779. The reversal of 56501771 is 17710565.

56501771 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 56501771 - 2¹⁸ = 56239627 is a prime.

It is a super-2 number, since 2×56501771² = 6384900252272882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56501779) 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, 5045 + ... + 11766.

It is an arithmetic number, because the mean of its divisors is an integer number (14130486).

Almost surely, 2^56501771 is an apocalyptic number.

56501771 is a deficient number, since it is larger than the sum of its proper divisors (20173).

56501771 is a wasteful number, since it uses less digits than its factorization.

56501771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20172.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 56501771 is about 7516.7659934310. The cubic root of 56501771 is about 383.7255231659.

The spelling of 56501771 in words is "fifty-six million, five hundred one thousand, seven hundred seventy-one".