56215245 has 32 divisors (see below), whose sum is σ = 94639104. Its totient is φ = 28454400.

The previous prime is 56215241. The next prime is 56215279. The reversal of 56215245 is 54251265.

It is not a de Polignac number, because 56215245 - 2² = 56215241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56215241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23505 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (2957472).

Almost surely, 2^56215245 is an apocalyptic number.

It is an amenable number.

56215245 is a deficient number, since it is larger than the sum of its proper divisors (38423859).

56215245 is a wasteful number, since it uses less digits than its factorization.

56215245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373.

The product of its digits is 12000, while the sum is 30.

The square root of 56215245 is about 7497.6826419901. The cubic root of 56215245 is about 383.0757870962.

The spelling of 56215245 in words is "fifty-six million, two hundred fifteen thousand, two hundred forty-five".