253116397 has 2 divisors, whose sum is σ = 253116398. Its totient is φ = 253116396.

The previous prime is 253116377. The next prime is 253116401. The reversal of 253116397 is 793611352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216501796 + 36614601 = 14714^2 + 6051^2 .

It is a cyclic number.

It is not a de Polignac number, because 253116397 - 2²³ = 244727789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253116337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126558198 + 126558199.

It is an arithmetic number, because the mean of its divisors is an integer number (126558199).

Almost surely, 2^253116397 is an apocalyptic number.

It is an amenable number.

253116397 is a deficient number, since it is larger than the sum of its proper divisors (1).

253116397 is an equidigital number, since it uses as much as digits as its factorization.

253116397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 253116397 is about 15909.6322081939. The cubic root of 253116397 is about 632.5673324248.

The spelling of 253116397 in words is "two hundred fifty-three million, one hundred sixteen thousand, three hundred ninety-seven".