251493713 has 16 divisors (see below), whose sum is σ = 272764800. Its totient is φ = 231342720.

The previous prime is 251493701. The next prime is 251493719. The reversal of 251493713 is 317394152.

It is a cyclic number.

It is not a de Polignac number, because 251493713 - 2¹⁴ = 251477329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251493719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48668 + ... + 53586.

It is an arithmetic number, because the mean of its divisors is an integer number (17047800).

Almost surely, 2^251493713 is an apocalyptic number.

It is an amenable number.

251493713 is a deficient number, since it is larger than the sum of its proper divisors (21271087).

251493713 is a wasteful number, since it uses less digits than its factorization.

251493713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032.

The product of its digits is 22680, while the sum is 35.

The square root of 251493713 is about 15858.5533072850. The cubic root of 251493713 is about 631.2126747463.

The spelling of 251493713 in words is "two hundred fifty-one million, four hundred ninety-three thousand, seven hundred thirteen".