253705489 has 2 divisors, whose sum is σ = 253705490. Its totient is φ = 253705488.

The previous prime is 253705469. The next prime is 253705513. The reversal of 253705489 is 984507352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243110464 + 10595025 = 15592^2 + 3255^2 .

It is a cyclic number.

It is not a de Polignac number, because 253705489 - 2⁹ = 253704977 is a prime.

It is not a weakly prime, because it can be changed into another prime (253705409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126852744 + 126852745.

It is an arithmetic number, because the mean of its divisors is an integer number (126852745).

Almost surely, 2^253705489 is an apocalyptic number.

It is an amenable number.

253705489 is a deficient number, since it is larger than the sum of its proper divisors (1).

253705489 is an equidigital number, since it uses as much as digits as its factorization.

253705489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 253705489 is about 15928.1351388039. The cubic root of 253705489 is about 633.0576886979.

The spelling of 253705489 in words is "two hundred fifty-three million, seven hundred five thousand, four hundred eighty-nine".