253802749 has 2 divisors, whose sum is σ = 253802750. Its totient is φ = 253802748.

The previous prime is 253802737. The next prime is 253802771. The reversal of 253802749 is 947208352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253287225 + 515524 = 15915^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 253802749 - 2²⁵ = 220248317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253802729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126901374 + 126901375.

It is an arithmetic number, because the mean of its divisors is an integer number (126901375).

Almost surely, 2^253802749 is an apocalyptic number.

It is an amenable number.

253802749 is a deficient number, since it is larger than the sum of its proper divisors (1).

253802749 is an equidigital number, since it uses as much as digits as its factorization.

253802749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 253802749 is about 15931.1879343632. The cubic root of 253802749 is about 633.1385742485.

The spelling of 253802749 in words is "two hundred fifty-three million, eight hundred two thousand, seven hundred forty-nine".