56506605 has 16 divisors (see below), whose sum is σ = 90515904. Its totient is φ = 30101760.

The previous prime is 56506603. The next prime is 56506613. The reversal of 56506605 is 50660565.

It is not a de Polignac number, because 56506605 - 2¹ = 56506603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56506603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15957 + ... + 19173.

It is an arithmetic number, because the mean of its divisors is an integer number (5657244).

Almost surely, 2^56506605 is an apocalyptic number.

It is an amenable number.

56506605 is a deficient number, since it is larger than the sum of its proper divisors (34009299).

56506605 is a wasteful number, since it uses less digits than its factorization.

56506605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 56506605 is about 7517.0875344112. The cubic root of 56506605 is about 383.7364660458.

The spelling of 56506605 in words is "fifty-six million, five hundred six thousand, six hundred five".