249313155 has 64 divisors (see below), whose sum is σ = 516848640. Its totient is φ = 99657216.

The previous prime is 249313139. The next prime is 249313171. The reversal of 249313155 is 551313942.

It is an interprime number because it is at equal distance from previous prime (249313139) and next prime (249313171).

It is not a de Polignac number, because 249313155 - 2⁴ = 249313139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21129 + ... + 30741.

It is an arithmetic number, because the mean of its divisors is an integer number (8075760).

Almost surely, 2^249313155 is an apocalyptic number.

249313155 is an abundant number, since it is smaller than the sum of its proper divisors (267535485).

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

249313155 is a wasteful number, since it uses less digits than its factorization.

249313155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9660.

The product of its digits is 16200, while the sum is 33.

The square root of 249313155 is about 15789.6534160823. The cubic root of 249313155 is about 629.3830821569.

The spelling of 249313155 in words is "two hundred forty-nine million, three hundred thirteen thousand, one hundred fifty-five".