56015215 has 8 divisors (see below), whose sum is σ = 67469760. Its totient is φ = 44644512.

The previous prime is 56015159. The next prime is 56015243. The reversal of 56015215 is 51251065.

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 56015215 - 2⁹ = 56014703 is a prime.

It is a super-2 number, since 2×56015215² = 6275408622992450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56015215.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19479 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (8433720).

Almost surely, 2^56015215 is an apocalyptic number.

56015215 is a deficient number, since it is larger than the sum of its proper divisors (11454545).

56015215 is a wasteful number, since it uses less digits than its factorization.

56015215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41921.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 56015215 is about 7484.3312994549. The cubic root of 56015215 is about 382.6208825216.

It can be divided in two parts, 5601 and 5215, that added together give a square (10816 = 104²).

The spelling of 56015215 in words is "fifty-six million, fifteen thousand, two hundred fifteen".