251396 has 12 divisors (see below), whose sum is σ = 465948. Its totient is φ = 118272.

The previous prime is 251393. The next prime is 251417. The reversal of 251396 is 693152.

It can be written as a sum of positive squares in 2 ways, for example, as 102400 + 148996 = 320^2 + 386^2 .

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 251396.

It is not an unprimeable number, because it can be changed into a prime (251393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (38829).

2²⁵¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

251396 is a deficient number, since it is larger than the sum of its proper divisors (214552).

251396 is a wasteful number, since it uses less digits than its factorization.

251396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3716 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 251396 is about 501.3940566062. The cubic root of 251396 is about 63.1130915680.

The spelling of 251396 in words is "two hundred fifty-one thousand, three hundred ninety-six".