249502231 has 4 divisors (see below), whose sum is σ = 272184264. Its totient is φ = 226820200.

The previous prime is 249502223. The next prime is 249502237. The reversal of 249502231 is 132205942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249502231 - 2³ = 249502223 is a prime.

It is a super-2 number, since 2×249502231² = 124502726547954722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 249502231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249502237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11341000 + ... + 11341021.

It is an arithmetic number, because the mean of its divisors is an integer number (68046066).

Almost surely, 2^249502231 is an apocalyptic number.

249502231 is a deficient number, since it is larger than the sum of its proper divisors (22682033).

249502231 is a wasteful number, since it uses less digits than its factorization.

249502231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22682032.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 249502231 is about 15795.6396198445. The cubic root of 249502231 is about 629.5421473899.

The spelling of 249502231 in words is "two hundred forty-nine million, five hundred two thousand, two hundred thirty-one".