56505605 has 8 divisors (see below), whose sum is σ = 73022712. Its totient is φ = 41727168.

The previous prime is 56505557. The next prime is 56505607. The reversal of 56505605 is 50650565.

56505605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2070721 + 54434884 = 1439^2 + 7378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56505605 - 2⁸ = 56505349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434594 + ... + 434723.

It is an arithmetic number, because the mean of its divisors is an integer number (9127839).

Almost surely, 2^56505605 is an apocalyptic number.

It is an amenable number.

56505605 is a deficient number, since it is larger than the sum of its proper divisors (16517107).

56505605 is a wasteful number, since it uses less digits than its factorization.

56505605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869335.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 56505605 is about 7517.0210189942. The cubic root of 56505605 is about 383.7342023651.

It can be divided in two parts, 5650560 and 5, that added together give a palindrome (5650565).

The spelling of 56505605 in words is "fifty-six million, five hundred five thousand, six hundred five".