56957581 has 8 divisors (see below), whose sum is σ = 57579200. Its totient is φ = 56339712.

The previous prime is 56957539. The next prime is 56957587. The reversal of 56957581 is 18575965.

56957581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56957581 - 2¹⁷ = 56826509 is a prime.

It is a super-2 number, since 2×56957581² = 6488332066743122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56957587) 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 7 ways as a sum of consecutive naturals, for example, 37666 + ... + 39148.

It is an arithmetic number, because the mean of its divisors is an integer number (7197400).

Almost surely, 2^56957581 is an apocalyptic number.

It is an amenable number.

56957581 is a deficient number, since it is larger than the sum of its proper divisors (621619).

56957581 is a wasteful number, since it uses less digits than its factorization.

56957581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its digits is 378000, while the sum is 46.

The square root of 56957581 is about 7547.0246455143. The cubic root of 56957581 is about 384.7546218513.

The spelling of 56957581 in words is "fifty-six million, nine hundred fifty-seven thousand, five hundred eighty-one".