56612505 has 16 divisors (see below), whose sum is σ = 90840960. Its totient is φ = 30106368.

The previous prime is 56612503. The next prime is 56612519. The reversal of 56612505 is 50521665.

It is not a de Polignac number, because 56612505 - 2¹ = 56612503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56612503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (5677560).

Almost surely, 2^56612505 is an apocalyptic number.

It is an amenable number.

56612505 is a deficient number, since it is larger than the sum of its proper divisors (34228455).

56612505 is a wasteful number, since it uses less digits than its factorization.

56612505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10880.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 56612505 is about 7524.1281887007. The cubic root of 56612505 is about 383.9760388152.

The spelling of 56612505 in words is "fifty-six million, six hundred twelve thousand, five hundred five".