56115505 has 4 divisors (see below), whose sum is σ = 67338612. Its totient is φ = 44892400.

The previous prime is 56115481. The next prime is 56115529. The reversal of 56115505 is 50551165.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56115481) and next prime (56115529).

It can be written as a sum of positive squares in 2 ways, for example, as 8946081 + 47169424 = 2991^2 + 6868^2 .

It is not a de Polignac number, because 56115505 - 2¹³ = 56107313 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, 5611546 + ... + 5611555.

It is an arithmetic number, because the mean of its divisors is an integer number (16834653).

Almost surely, 2^56115505 is an apocalyptic number.

It is an amenable number.

56115505 is a deficient number, since it is larger than the sum of its proper divisors (11223107).

56115505 is a wasteful number, since it uses less digits than its factorization.

56115505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223106.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 56115505 is about 7491.0283005740. The cubic root of 56115505 is about 382.8490953381.

The spelling of 56115505 in words is "fifty-six million, one hundred fifteen thousand, five hundred five".