253710749 has 2 divisors, whose sum is σ = 253710750. Its totient is φ = 253710748.

The previous prime is 253710719. The next prime is 253710757. The reversal of 253710749 is 947017352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204289849 + 49420900 = 14293^2 + 7030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253710749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253710719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126855374 + 126855375.

It is an arithmetic number, because the mean of its divisors is an integer number (126855375).

Almost surely, 2^253710749 is an apocalyptic number.

It is an amenable number.

253710749 is a deficient number, since it is larger than the sum of its proper divisors (1).

253710749 is an equidigital number, since it uses as much as digits as its factorization.

253710749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 253710749 is about 15928.3002545783. The cubic root of 253710749 is about 633.0620636662.

The spelling of 253710749 in words is "two hundred fifty-three million, seven hundred ten thousand, seven hundred forty-nine".