56215207 has 4 divisors (see below), whose sum is σ = 56263216. Its totient is φ = 56167200.

The previous prime is 56215189. The next prime is 56215213. The reversal of 56215207 is 70251265.

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 56215207 - 2¹¹ = 56213159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56215217) 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, 22203 + ... + 24604.

It is an arithmetic number, because the mean of its divisors is an integer number (14065804).

Almost surely, 2^56215207 is an apocalyptic number.

56215207 is a deficient number, since it is larger than the sum of its proper divisors (48009).

56215207 is a wasteful number, since it uses less digits than its factorization.

56215207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48008.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 56215207 is about 7497.6801078734. The cubic root of 56215207 is about 383.0757007799.

The spelling of 56215207 in words is "fifty-six million, two hundred fifteen thousand, two hundred seven".