56870081 has 4 divisors (see below), whose sum is σ = 56888964. Its totient is φ = 56851200.

The previous prime is 56870063. The next prime is 56870101. The reversal of 56870081 is 18007865.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18318400 + 38551681 = 4280^2 + 6209^2 .

It is a cyclic number.

It is not a de Polignac number, because 56870081 - 2⁶ = 56870017 is a prime.

It is a super-2 number, since 2×56870081² = 6468412225893122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56860081) 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, 3800 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (14222241).

Almost surely, 2^56870081 is an apocalyptic number.

It is an amenable number.

56870081 is a deficient number, since it is larger than the sum of its proper divisors (18883).

56870081 is a wasteful number, since it uses less digits than its factorization.

56870081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18882.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 56870081 is about 7541.2254309230. The cubic root of 56870081 is about 384.5574968848.

The spelling of 56870081 in words is "fifty-six million, eight hundred seventy thousand, eighty-one".