56355081 has 12 divisors (see below), whose sum is σ = 76023792. Its totient is φ = 37130104.

The previous prime is 56355077. The next prime is 56355097. The reversal of 56355081 is 18055365.

It is not a de Polignac number, because 56355081 - 2² = 56355077 is a prime.

It is a super-2 number, since 2×56355081² = 6351790309033122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56355031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134290 + ... + 134708.

It is an arithmetic number, because the mean of its divisors is an integer number (6335316).

Almost surely, 2^56355081 is an apocalyptic number.

It is an amenable number.

56355081 is a deficient number, since it is larger than the sum of its proper divisors (19668711).

56355081 is an equidigital number, since it uses as much as digits as its factorization.

56355081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 56355081 is about 7507.0021313438. The cubic root of 56355081 is about 383.3931590727.

The spelling of 56355081 in words is "fifty-six million, three hundred fifty-five thousand, eighty-one".