56051605 has 4 divisors (see below), whose sum is σ = 67261932. Its totient is φ = 44841280.

The previous prime is 56051599. The next prime is 56051609. The reversal of 56051605 is 50615065.

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 36893476 + 19158129 = 6074^2 + 4377^2 .

It is not a de Polignac number, because 56051605 - 2⁵ = 56051573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56051609) 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, 5605156 + ... + 5605165.

It is an arithmetic number, because the mean of its divisors is an integer number (16815483).

Almost surely, 2^56051605 is an apocalyptic number.

It is an amenable number.

56051605 is a deficient number, since it is larger than the sum of its proper divisors (11210327).

56051605 is a wasteful number, since it uses less digits than its factorization.

56051605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210326.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 56051605 is about 7486.7619836616. The cubic root of 56051605 is about 382.7037204903.

The spelling of 56051605 in words is "fifty-six million, fifty-one thousand, six hundred five".