251113045 has 8 divisors (see below), whose sum is σ = 301495680. Its totient is φ = 200783760.

The previous prime is 251113021. The next prime is 251113061. The reversal of 251113045 is 540311152.

It is a happy number.

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

It is not a de Polignac number, because 251113045 - 2¹¹ = 251110997 is a prime.

It is a super-2 number, since 2×251113045² = 126115522738344050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 22510.

It is an arithmetic number, because the mean of its divisors is an integer number (37686960).

Almost surely, 2^251113045 is an apocalyptic number.

It is an amenable number.

251113045 is a deficient number, since it is larger than the sum of its proper divisors (50382635).

251113045 is a wasteful number, since it uses less digits than its factorization.

251113045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26675.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 251113045 is about 15846.5467847099. The cubic root of 251113045 is about 630.8940401392.

Adding to 251113045 its reverse (540311152), we get a palindrome (791424197).

The spelling of 251113045 in words is "two hundred fifty-one million, one hundred thirteen thousand, forty-five".