249972558 has 32 divisors (see below), whose sum is σ = 547506432. Its totient is φ = 75456000.

The previous prime is 249972551. The next prime is 249972559. The reversal of 249972558 is 855279942.

It is a self number, because there is not a number n which added to its sum of digits gives 249972558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249972551) 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, 10158 + ... + 24558.

It is an arithmetic number, because the mean of its divisors is an integer number (17109576).

Almost surely, 2^249972558 is an apocalyptic number.

249972558 is an abundant number, since it is smaller than the sum of its proper divisors (297533874).

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

249972558 is a wasteful number, since it uses less digits than its factorization.

249972558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680.

The product of its digits is 1814400, while the sum is 51.

The square root of 249972558 is about 15810.5204847911. The cubic root of 249972558 is about 629.9374742684.

It can be divided in two parts, 2499 and 72558, that added together give a palindrome (75057).

The spelling of 249972558 in words is "two hundred forty-nine million, nine hundred seventy-two thousand, five hundred fifty-eight".