240515249 has 16 divisors (see below), whose sum is σ = 262072272. Its totient is φ = 219414528.

The previous prime is 240515227. The next prime is 240515251. The reversal of 240515249 is 942515042.

It can be written as a sum of positive squares in 8 ways, for example, as 110224 + 240405025 = 332^2 + 15505^2 .

It is a cyclic number.

It is not a de Polignac number, because 240515249 - 2²⁰ = 239466673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (240515279) 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, 644627 + ... + 644999.

It is an arithmetic number, because the mean of its divisors is an integer number (16379517).

Almost surely, 2^240515249 is an apocalyptic number.

It is an amenable number.

240515249 is a deficient number, since it is larger than the sum of its proper divisors (21557023).

240515249 is a wasteful number, since it uses less digits than its factorization.

240515249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 240515249 is about 15508.5540589702. The cubic root of 240515249 is about 621.8909051057.

The spelling of 240515249 in words is "two hundred forty million, five hundred fifteen thousand, two hundred forty-nine".