253240349 has 2 divisors, whose sum is σ = 253240350. Its totient is φ = 253240348.

The previous prime is 253240343. The next prime is 253240357. The reversal of 253240349 is 943042352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238084900 + 15155449 = 15430^2 + 3893^2 .

It is a cyclic number.

It is not a de Polignac number, because 253240349 - 2¹² = 253236253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253240343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126620174 + 126620175.

It is an arithmetic number, because the mean of its divisors is an integer number (126620175).

Almost surely, 2^253240349 is an apocalyptic number.

It is an amenable number.

253240349 is a deficient number, since it is larger than the sum of its proper divisors (1).

253240349 is an equidigital number, since it uses as much as digits as its factorization.

253240349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 253240349 is about 15913.5272331435. The cubic root of 253240349 is about 632.6705723986.

The spelling of 253240349 in words is "two hundred fifty-three million, two hundred forty thousand, three hundred forty-nine".