68115253 has 2 divisors, whose sum is σ = 68115254. Its totient is φ = 68115252.

The previous prime is 68115241. The next prime is 68115283. The reversal of 68115253 is 35251186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65577604 + 2537649 = 8098^2 + 1593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68115253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68115283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34057626 + 34057627.

It is an arithmetic number, because the mean of its divisors is an integer number (34057627).

Almost surely, 2^68115253 is an apocalyptic number.

It is an amenable number.

68115253 is a deficient number, since it is larger than the sum of its proper divisors (1).

68115253 is an equidigital number, since it uses as much as digits as its factorization.

68115253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 68115253 is about 8253.1965322534. The cubic root of 68115253 is about 408.3959795410.

The spelling of 68115253 in words is "sixty-eight million, one hundred fifteen thousand, two hundred fifty-three".