165764253 has 16 divisors (see below), whose sum is σ = 226759680. Its totient is φ = 107660976.

The previous prime is 165764251. The next prime is 165764299. The reversal of 165764253 is 352467561.

It is not a de Polignac number, because 165764253 - 2¹ = 165764251 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165764251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29418 + ... + 34596.

It is an arithmetic number, because the mean of its divisors is an integer number (14172480).

Almost surely, 2^165764253 is an apocalyptic number.

It is an amenable number.

165764253 is a deficient number, since it is larger than the sum of its proper divisors (60995427).

165764253 is a wasteful number, since it uses less digits than its factorization.

165764253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456.

The product of its digits is 151200, while the sum is 39.

The square root of 165764253 is about 12874.9467183364. The cubic root of 165764253 is about 549.3261753615.

The spelling of 165764253 in words is "one hundred sixty-five million, seven hundred sixty-four thousand, two hundred fifty-three".