56785081 has 4 divisors (see below), whose sum is σ = 57747600. Its totient is φ = 55822564.

The previous prime is 56785073. The next prime is 56785097. The reversal of 56785081 is 18058765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56785081 - 2³ = 56785073 is a prime.

It is a super-2 number, since 2×56785081² = 6449090848353122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56785181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481171 + ... + 481288.

It is an arithmetic number, because the mean of its divisors is an integer number (14436900).

Almost surely, 2^56785081 is an apocalyptic number.

It is an amenable number.

56785081 is a deficient number, since it is larger than the sum of its proper divisors (962519).

56785081 is an equidigital number, since it uses as much as digits as its factorization.

56785081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962518.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 56785081 is about 7535.5876346838. The cubic root of 56785081 is about 384.3658103516.

The spelling of 56785081 in words is "fifty-six million, seven hundred eighty-five thousand, eighty-one".