251052419 has 2 divisors, whose sum is σ = 251052420. Its totient is φ = 251052418.

The previous prime is 251052409. The next prime is 251052463. The reversal of 251052419 is 914250152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251052419 - 2²⁴ = 234275203 is a prime.

It is a super-2 number, since 2×251052419² = 126054634171503122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 251052391 and 251052400.

It is not a weakly prime, because it can be changed into another prime (251052409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125526209 + 125526210.

It is an arithmetic number, because the mean of its divisors is an integer number (125526210).

Almost surely, 2^251052419 is an apocalyptic number.

251052419 is a deficient number, since it is larger than the sum of its proper divisors (1).

251052419 is an equidigital number, since it uses as much as digits as its factorization.

251052419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 251052419 is about 15844.6337603619. The cubic root of 251052419 is about 630.8432639896.

The spelling of 251052419 in words is "two hundred fifty-one million, fifty-two thousand, four hundred nineteen".