215057245 has 32 divisors (see below), whose sum is σ = 293190912. Its totient is φ = 150239232.

The previous prime is 215057237. The next prime is 215057263. The reversal of 215057245 is 542750512.

215057245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215057245 - 2³ = 215057237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144274 + ... + 145756.

It is an arithmetic number, because the mean of its divisors is an integer number (9162216).

Almost surely, 2^215057245 is an apocalyptic number.

It is an amenable number.

215057245 is a deficient number, since it is larger than the sum of its proper divisors (78133667).

215057245 is a wasteful number, since it uses less digits than its factorization.

215057245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 215057245 is about 14664.8302069952. The cubic root of 215057245 is about 599.1258056293.

It can be divided in two parts, 2150 and 57245, that added together give a palindrome (59395).

The spelling of 215057245 in words is "two hundred fifteen million, fifty-seven thousand, two hundred forty-five".