251130849 has 8 divisors (see below), whose sum is σ = 334927200. Its totient is φ = 167377536.

The previous prime is 251130827. The next prime is 251130871. The reversal of 251130849 is 948031152.

It is an interprime number because it is at equal distance from previous prime (251130827) and next prime (251130871).

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

It is a de Polignac number, because none of the positive numbers 2^k-251130849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (251130149) 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, 7089 + ... + 23505.

It is an arithmetic number, because the mean of its divisors is an integer number (41865900).

Almost surely, 2^251130849 is an apocalyptic number.

It is an amenable number.

251130849 is a deficient number, since it is larger than the sum of its proper divisors (83796351).

251130849 is a wasteful number, since it uses less digits than its factorization.

251130849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21519.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 251130849 is about 15847.1085375219. The cubic root of 251130849 is about 630.9089499872.

The spelling of 251130849 in words is "two hundred fifty-one million, one hundred thirty thousand, eight hundred forty-nine".