251483641 has 2 divisors, whose sum is σ = 251483642. Its totient is φ = 251483640.

The previous prime is 251483597. The next prime is 251483681. The reversal of 251483641 is 146384152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219899241 + 31584400 = 14829^2 + 5620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251483641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251483597 and 251483606.

It is not a weakly prime, because it can be changed into another prime (251483681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125741820 + 125741821.

It is an arithmetic number, because the mean of its divisors is an integer number (125741821).

Almost surely, 2^251483641 is an apocalyptic number.

It is an amenable number.

251483641 is a deficient number, since it is larger than the sum of its proper divisors (1).

251483641 is an equidigital number, since it uses as much as digits as its factorization.

251483641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The square root of 251483641 is about 15858.2357467658. The cubic root of 251483641 is about 631.2042482150.

The spelling of 251483641 in words is "two hundred fifty-one million, four hundred eighty-three thousand, six hundred forty-one".