249255887 has 8 divisors (see below), whose sum is σ = 264060000. Its totient is φ = 234467584.

The previous prime is 249255871. The next prime is 249255893. The reversal of 249255887 is 788552942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249255887 - 2⁴ = 249255871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249255817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48539 + ... + 53427.

It is an arithmetic number, because the mean of its divisors is an integer number (33007500).

Almost surely, 2^249255887 is an apocalyptic number.

249255887 is a deficient number, since it is larger than the sum of its proper divisors (14804113).

249255887 is a wasteful number, since it uses less digits than its factorization.

249255887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905.

The product of its digits is 1612800, while the sum is 50.

The square root of 249255887 is about 15787.8398459067. The cubic root of 249255887 is about 629.3348880554.

The spelling of 249255887 in words is "two hundred forty-nine million, two hundred fifty-five thousand, eight hundred eighty-seven".