204152515 has 16 divisors (see below), whose sum is σ = 289013760. Its totient is φ = 135473760.

The previous prime is 204152513. The next prime is 204152539. The reversal of 204152515 is 515251402.

204152515 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 204152515 - 2¹ = 204152513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204152515.

It is not an unprimeable number, because it can be changed into a prime (204152513) 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, 92995 + ... + 95164.

It is an arithmetic number, because the mean of its divisors is an integer number (18063360).

Almost surely, 2^204152515 is an apocalyptic number.

204152515 is a deficient number, since it is larger than the sum of its proper divisors (84861245).

204152515 is a wasteful number, since it uses less digits than its factorization.

204152515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188202.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 204152515 is about 14288.1949524774. The cubic root of 204152515 is about 588.8231977605.

The spelling of 204152515 in words is "two hundred four million, one hundred fifty-two thousand, five hundred fifteen".