215233515 has 48 divisors (see below), whose sum is σ = 451459008. Its totient is φ = 92602368.

The previous prime is 215233493. The next prime is 215233519. The reversal of 215233515 is 515332512.

It is a happy number.

It is not a de Polignac number, because 215233515 - 2⁵ = 215233483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215233519) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14742 + ... + 25451.

It is an arithmetic number, because the mean of its divisors is an integer number (9405396).

Almost surely, 2^215233515 is an apocalyptic number.

215233515 is an abundant number, since it is smaller than the sum of its proper divisors (236225493).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215233515 is a wasteful number, since it uses less digits than its factorization.

215233515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40228 (or 40225 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 215233515 is about 14670.8389330672. The cubic root of 215233515 is about 599.2894505313.

The spelling of 215233515 in words is "two hundred fifteen million, two hundred thirty-three thousand, five hundred fifteen".