56505015 has 24 divisors (see below), whose sum is σ = 111934368. Its totient is φ = 25830720.

The previous prime is 56505013. The next prime is 56505017. The reversal of 56505015 is 51050565.

56505015 is a `hidden beast` number, since 5 + 650 + 5 + 0 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (56505013) and next prime (56505017).

It is not a de Polignac number, because 56505015 - 2¹ = 56505013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56505015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89376 + ... + 90005.

It is an arithmetic number, because the mean of its divisors is an integer number (4663932).

Almost surely, 2^56505015 is an apocalyptic number.

56505015 is a deficient number, since it is larger than the sum of its proper divisors (55429353).

56505015 is a wasteful number, since it uses less digits than its factorization.

56505015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179399 (or 179396 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 56505015 is about 7516.9817746220. The cubic root of 56505015 is about 383.7328667810.

The spelling of 56505015 in words is "fifty-six million, five hundred five thousand, fifteen".