251492 has 6 divisors (see below), whose sum is σ = 440118.
Its totient is φ = 125744.
The previous prime is 251491. The next prime is 251501. The reversal of 251492 is 294152.
It can be written as a sum of positive squares in only one way, i.e., 246016 + 5476 = 496^2 + 74^2
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 251492.
It is not an unprimeable number, because it can be changed into a prime (251491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31433 + ... + 31440.
It is an arithmetic number, because the mean of its divisors is an integer number (73353).
2251492 is an apocalyptic number.
It is an amenable number.
251492 is a deficient number, since it is larger than the sum of its proper divisors (188626).
251492 is a wasteful number, since it uses less digits than its factorization.
251492 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62877 (or 62875 counting only the distinct ones).
The product of its digits is 720, while the sum is 23.
The square root of 251492 is about 501.4897805539.
The cubic root of 251492 is about 63.1211241616.
The spelling of 251492 in words is "two hundred fifty-one thousand, four hundred ninety-two".