56909305 has 4 divisors (see below), whose sum is σ = 68291172. Its totient is φ = 45527440.

The previous prime is 56909287. The next prime is 56909317. The reversal of 56909305 is 50390965.

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 23454649 + 33454656 = 4843^2 + 5784^2 .

It is not a de Polignac number, because 56909305 - 2¹³ = 56901113 is a prime.

It is a Duffinian 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, 5690926 + ... + 5690935.

It is an arithmetic number, because the mean of its divisors is an integer number (17072793).

Almost surely, 2^56909305 is an apocalyptic number.

It is an amenable number.

56909305 is a deficient number, since it is larger than the sum of its proper divisors (11381867).

56909305 is a wasteful number, since it uses less digits than its factorization.

56909305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381866.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 56909305 is about 7543.8256209963. The cubic root of 56909305 is about 384.6458879244.

The spelling of 56909305 in words is "fifty-six million, nine hundred nine thousand, three hundred five".