56907215 has 4 divisors (see below), whose sum is σ = 68288664. Its totient is φ = 45525768.

The previous prime is 56907209. The next prime is 56907217. The reversal of 56907215 is 51270965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56907215 - 2¹⁴ = 56890831 is a prime.

It is a super-2 number, since 2×56907215² = 6476862238112450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56907217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690717 + ... + 5690726.

It is an arithmetic number, because the mean of its divisors is an integer number (17072166).

Almost surely, 2^56907215 is an apocalyptic number.

56907215 is a deficient number, since it is larger than the sum of its proper divisors (11381449).

56907215 is a wasteful number, since it uses less digits than its factorization.

56907215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11381448.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 56907215 is about 7543.6870958438. The cubic root of 56907215 is about 384.6411791470.

The spelling of 56907215 in words is "fifty-six million, nine hundred seven thousand, two hundred fifteen".