56904605 has 4 divisors (see below), whose sum is σ = 68285532. Its totient is φ = 45523680.

The previous prime is 56904577. The next prime is 56904611. The reversal of 56904605 is 50640965.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50640965 = 5 ⋅10128193.

It can be written as a sum of positive squares in 2 ways, for example, as 33304441 + 23600164 = 5771^2 + 4858^2 .

It is not a de Polignac number, because 56904605 - 2²⁴ = 40127389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690456 + ... + 5690465.

It is an arithmetic number, because the mean of its divisors is an integer number (17071383).

Almost surely, 2^56904605 is an apocalyptic number.

It is an amenable number.

56904605 is a deficient number, since it is larger than the sum of its proper divisors (11380927).

56904605 is a wasteful number, since it uses less digits than its factorization.

56904605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11380926.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 56904605 is about 7543.5141015312. The cubic root of 56904605 is about 384.6352986458.

The spelling of 56904605 in words is "fifty-six million, nine hundred four thousand, six hundred five".