168357253 has 2 divisors, whose sum is σ = 168357254. Its totient is φ = 168357252.

The previous prime is 168357229. The next prime is 168357269. The reversal of 168357253 is 352753861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167107329 + 1249924 = 12927^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 168357253 - 2⁵ = 168357221 is a prime.

It is equal to p_9416299 and since 168357253 and 9416299 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165357253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84178626 + 84178627.

It is an arithmetic number, because the mean of its divisors is an integer number (84178627).

Almost surely, 2^168357253 is an apocalyptic number.

It is an amenable number.

168357253 is a deficient number, since it is larger than the sum of its proper divisors (1).

168357253 is an equidigital number, since it uses as much as digits as its factorization.

168357253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 168357253 is about 12975.2554117443. The cubic root of 168357253 is about 552.1756829393.

The spelling of 168357253 in words is "one hundred sixty-eight million, three hundred fifty-seven thousand, two hundred fifty-three".