56505113 has 4 divisors (see below), whose sum is σ = 64577280. Its totient is φ = 48432948.

The previous prime is 56505103. The next prime is 56505131. The reversal of 56505113 is 31150565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56505113 - 2¹⁸ = 56242969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56505103) 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, 4036073 + ... + 4036086.

It is an arithmetic number, because the mean of its divisors is an integer number (16144320).

Almost surely, 2^56505113 is an apocalyptic number.

It is an amenable number.

56505113 is a deficient number, since it is larger than the sum of its proper divisors (8072167).

56505113 is an equidigital number, since it uses as much as digits as its factorization.

56505113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8072166.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 56505113 is about 7516.9882931930. The cubic root of 56505113 is about 383.7330886244.

Adding to 56505113 its reverse (31150565), we get a palindrome (87655678).

The spelling of 56505113 in words is "fifty-six million, five hundred five thousand, one hundred thirteen".