251267441 has 2 divisors, whose sum is σ = 251267442. Its totient is φ = 251267440.

The previous prime is 251267437. The next prime is 251267459. The reversal of 251267441 is 144762152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131583841 + 119683600 = 11471^2 + 10940^2 .

It is a cyclic number.

It is not a de Polignac number, because 251267441 - 2² = 251267437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251267398 and 251267407.

It is not a weakly prime, because it can be changed into another prime (251267411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125633720 + 125633721.

It is an arithmetic number, because the mean of its divisors is an integer number (125633721).

Almost surely, 2^251267441 is an apocalyptic number.

It is an amenable number.

251267441 is a deficient number, since it is larger than the sum of its proper divisors (1).

251267441 is an equidigital number, since it uses as much as digits as its factorization.

251267441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 251267441 is about 15851.4176337639. The cubic root of 251267441 is about 631.0233146650.

The spelling of 251267441 in words is "two hundred fifty-one million, two hundred sixty-seven thousand, four hundred forty-one".