56540065 has 4 divisors (see below), whose sum is σ = 67848084. Its totient is φ = 45232048.

The previous prime is 56540047. The next prime is 56540087. The reversal of 56540065 is 56004565.

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 31259281 + 25280784 = 5591^2 + 5028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56540065 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, 5654002 + ... + 5654011.

It is an arithmetic number, because the mean of its divisors is an integer number (16962021).

Almost surely, 2^56540065 is an apocalyptic number.

It is an amenable number.

56540065 is a deficient number, since it is larger than the sum of its proper divisors (11308019).

56540065 is a wasteful number, since it uses less digits than its factorization.

56540065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11308018.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 56540065 is about 7519.3128010477. The cubic root of 56540065 is about 383.8121934093.

The spelling of 56540065 in words is "fifty-six million, five hundred forty thousand, sixty-five".