251413 has 8 divisors (see below), whose sum is σ = 278208. Its totient is φ = 225984.

The previous prime is 251393. The next prime is 251417. The reversal of 251413 is 314152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251417) 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, 70 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (34776).

2²⁵¹⁴¹³ is an apocalyptic number.

251413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

251413 is a deficient number, since it is larger than the sum of its proper divisors (26795).

251413 is a wasteful number, since it uses less digits than its factorization.

251413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its digits is 120, while the sum is 16.

The square root of 251413 is about 501.4110090535. The cubic root of 251413 is about 63.1145141554.

Adding to 251413 its reverse (314152), we get a palindrome (565565).

It can be divided in two parts, 2 and 51413, that added together give a palindrome (51415).

The spelling of 251413 in words is "two hundred fifty-one thousand, four hundred thirteen".