56387215 has 16 divisors (see below), whose sum is σ = 71850240. Its totient is φ = 42334720.

The previous prime is 56387209. The next prime is 56387239. The reversal of 56387215 is 51278365.

It is not a de Polignac number, because 56387215 - 2⁵ = 56387183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38466 + ... + 39904.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^56387215 is an apocalyptic number.

56387215 is a deficient number, since it is larger than the sum of its proper divisors (15463025).

56387215 is a wasteful number, since it uses less digits than its factorization.

56387215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922.

The product of its digits is 50400, while the sum is 37.

The square root of 56387215 is about 7509.1420948068. The cubic root of 56387215 is about 383.4660162411.

It can be divided in two parts, 563 and 87215, that added together give a palindrome (87778).

The spelling of 56387215 in words is "fifty-six million, three hundred eighty-seven thousand, two hundred fifteen".