56115005 has 4 divisors (see below), whose sum is σ = 67338012. Its totient is φ = 44892000.

The previous prime is 56115001. The next prime is 56115013. The reversal of 56115005 is 50051165.

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 17749369 + 38365636 = 4213^2 + 6194^2 .

It is not a de Polignac number, because 56115005 - 2² = 56115001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56115001) 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, 5611496 + ... + 5611505.

It is an arithmetic number, because the mean of its divisors is an integer number (16834503).

Almost surely, 2^56115005 is an apocalyptic number.

It is an amenable number.

56115005 is a deficient number, since it is larger than the sum of its proper divisors (11223007).

56115005 is a wasteful number, since it uses less digits than its factorization.

56115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223006.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 56115005 is about 7490.9949272443. The cubic root of 56115005 is about 382.8479582483.

The spelling of 56115005 in words is "fifty-six million, one hundred fifteen thousand, five".