165257263 has 2 divisors, whose sum is σ = 165257264. Its totient is φ = 165257262.

The previous prime is 165257243. The next prime is 165257291. The reversal of 165257263 is 362752561.

165257263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165257263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165257203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82628631 + 82628632.

It is an arithmetic number, because the mean of its divisors is an integer number (82628632).

Almost surely, 2^165257263 is an apocalyptic number.

165257263 is a deficient number, since it is larger than the sum of its proper divisors (1).

165257263 is an equidigital number, since it uses as much as digits as its factorization.

165257263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 165257263 is about 12855.2426270374. The cubic root of 165257263 is about 548.7655653591.

The spelling of 165257263 in words is "one hundred sixty-five million, two hundred fifty-seven thousand, two hundred sixty-three".