251298 has 24 divisors (see below), whose sum is σ = 569088. Its totient is φ = 79992.

The previous prime is 251297. The next prime is 251323. The reversal of 251298 is 892152.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (251291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (23712).

2²⁵¹²⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284544).

251298 is an abundant number, since it is smaller than the sum of its proper divisors (317790).

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

251298 is a wasteful number, since it uses less digits than its factorization.

251298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 635 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 251298 is about 501.2963195556. The cubic root of 251298 is about 63.1048895191.

The spelling of 251298 in words is "two hundred fifty-one thousand, two hundred ninety-eight".