251474131 has 2 divisors, whose sum is σ = 251474132. Its totient is φ = 251474130.

The previous prime is 251474099. The next prime is 251474141. The reversal of 251474131 is 131474152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251474131 - 2⁵ = 251474099 is a prime.

It is a super-2 number, since 2×251474131² = 126478477124410322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251474131.

It is not a weakly prime, because it can be changed into another prime (251474141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125737065 + 125737066.

It is an arithmetic number, because the mean of its divisors is an integer number (125737066).

Almost surely, 2^251474131 is an apocalyptic number.

251474131 is a deficient number, since it is larger than the sum of its proper divisors (1).

251474131 is an equidigital number, since it uses as much as digits as its factorization.

251474131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 251474131 is about 15857.9358997317. The cubic root of 251474131 is about 631.1962916629.

The spelling of 251474131 in words is "two hundred fifty-one million, four hundred seventy-four thousand, one hundred thirty-one".