165992255 has 32 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 108823680.

The previous prime is 165992251. The next prime is 165992257. The reversal of 165992255 is 552299561.

It is not a de Polignac number, because 165992255 - 2² = 165992251 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165992251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28046 + ... + 33444.

It is an arithmetic number, because the mean of its divisors is an integer number (7484400).

Almost surely, 2^165992255 is an apocalyptic number.

165992255 is a deficient number, since it is larger than the sum of its proper divisors (73508545).

165992255 is a wasteful number, since it uses less digits than its factorization.

165992255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471.

The product of its digits is 243000, while the sum is 44.

The square root of 165992255 is about 12883.7981589281. The cubic root of 165992255 is about 549.5779185931.

The spelling of 165992255 in words is "one hundred sixty-five million, nine hundred ninety-two thousand, two hundred fifty-five".