251130419 has 4 divisors (see below), whose sum is σ = 251786496. Its totient is φ = 250474344.

The previous prime is 251130367. The next prime is 251130421. The reversal of 251130419 is 914031152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251130419 is a prime.

It is a super-2 number, since 2×251130419² = 126132974694231122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251130469) 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 3 ways as a sum of consecutive naturals, for example, 327464 + ... + 328229.

It is an arithmetic number, because the mean of its divisors is an integer number (62946624).

Almost surely, 2^251130419 is an apocalyptic number.

251130419 is a deficient number, since it is larger than the sum of its proper divisors (656077).

251130419 is an equidigital number, since it uses as much as digits as its factorization.

251130419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656076.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 251130419 is about 15847.0949703723. The cubic root of 251130419 is about 630.9085898947.

The spelling of 251130419 in words is "two hundred fifty-one million, one hundred thirty thousand, four hundred nineteen".