251482501 has 2 divisors, whose sum is σ = 251482502. Its totient is φ = 251482500.

The previous prime is 251482493. The next prime is 251482507. The reversal of 251482501 is 105284152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199656900 + 51825601 = 14130^2 + 7199^2 .

It is a cyclic number.

It is not a de Polignac number, because 251482501 - 2³ = 251482493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251482501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251482507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125741250 + 125741251.

It is an arithmetic number, because the mean of its divisors is an integer number (125741251).

Almost surely, 2^251482501 is an apocalyptic number.

It is an amenable number.

251482501 is a deficient number, since it is larger than the sum of its proper divisors (1).

251482501 is an equidigital number, since it uses as much as digits as its factorization.

251482501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 251482501 is about 15858.1998032564. The cubic root of 251482501 is about 631.2032944433.

The spelling of 251482501 in words is "two hundred fifty-one million, four hundred eighty-two thousand, five hundred one".