215052253 has 16 divisors (see below), whose sum is σ = 235642176. Its totient is φ = 195068160.

The previous prime is 215052199. The next prime is 215052259. The reversal of 215052253 is 352250512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 215052253 - 2²¹ = 212955101 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 (215052259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259626 + ... + 260452.

It is an arithmetic number, because the mean of its divisors is an integer number (14727636).

Almost surely, 2^215052253 is an apocalyptic number.

It is an amenable number.

215052253 is a deficient number, since it is larger than the sum of its proper divisors (20589923).

215052253 is a wasteful number, since it uses less digits than its factorization.

215052253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 215052253 is about 14664.6600028777. The cubic root of 215052253 is about 599.1211698726.

The spelling of 215052253 in words is "two hundred fifteen million, fifty-two thousand, two hundred fifty-three".