165475253 has 2 divisors, whose sum is σ = 165475254. Its totient is φ = 165475252.

The previous prime is 165475213. The next prime is 165475259. The reversal of 165475253 is 352574561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84511249 + 80964004 = 9193^2 + 8998^2 .

It is a cyclic number.

It is not a de Polignac number, because 165475253 - 2⁸ = 165474997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165475259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82737626 + 82737627.

It is an arithmetic number, because the mean of its divisors is an integer number (82737627).

Almost surely, 2^165475253 is an apocalyptic number.

It is an amenable number.

165475253 is a deficient number, since it is larger than the sum of its proper divisors (1).

165475253 is an equidigital number, since it uses as much as digits as its factorization.

165475253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 165475253 is about 12863.7184748423. The cubic root of 165475253 is about 549.0067506135.

The spelling of 165475253 in words is "one hundred sixty-five million, four hundred seventy-five thousand, two hundred fifty-three".