251112493 has 24 divisors (see below), whose sum is σ = 280229120. Its totient is φ = 224156160.

The previous prime is 251112473. The next prime is 251112509. The reversal of 251112493 is 394211152.

It is a de Polignac number, because none of the positive numbers 2^k-251112493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251112443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1301005 + ... + 1301197.

Almost surely, 2^251112493 is an apocalyptic number.

It is an amenable number.

251112493 is a deficient number, since it is larger than the sum of its proper divisors (29116627).

251112493 is a wasteful number, since it uses less digits than its factorization.

251112493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 290 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 251112493 is about 15846.5293676565. The cubic root of 251112493 is about 630.8935778590.

The spelling of 251112493 in words is "two hundred fifty-one million, one hundred twelve thousand, four hundred ninety-three".