253344397 has 2 divisors, whose sum is σ = 253344398. Its totient is φ = 253344396.

The previous prime is 253344361. The next prime is 253344409. The reversal of 253344397 is 793443352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202379076 + 50965321 = 14226^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 253344397 - 2⁷ = 253344269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253344317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126672198 + 126672199.

It is an arithmetic number, because the mean of its divisors is an integer number (126672199).

Almost surely, 2^253344397 is an apocalyptic number.

It is an amenable number.

253344397 is a deficient number, since it is larger than the sum of its proper divisors (1).

253344397 is an equidigital number, since it uses as much as digits as its factorization.

253344397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 40.

The square root of 253344397 is about 15916.7960657916. The cubic root of 253344397 is about 632.7572082691.

The spelling of 253344397 in words is "two hundred fifty-three million, three hundred forty-four thousand, three hundred ninety-seven".