165992256 has 42 divisors (see below), whose sum is σ = 475788482. Its totient is φ = 55330560.

The previous prime is 165992251. The next prime is 165992257. The reversal of 165992256 is 652299561.

It is a happy number.

165992256 is a `hidden beast` number, since 1 + 6 + 599 + 2 + 2 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 164249856 + 1742400 = 12816^2 + 1320^2 .

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143515 + ... + 144666.

Almost surely, 2^165992256 is an apocalyptic number.

165992256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165992256 is an abundant number, since it is smaller than the sum of its proper divisors (309796226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165992256 is a wasteful number, since it uses less digits than its factorization.

165992256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288199 (or 288186 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 165992256 is about 12883.7981977366. The cubic root of 165992256 is about 549.5779196967.

The spelling of 165992256 in words is "one hundred sixty-five million, nine hundred ninety-two thousand, two hundred fifty-six".