165199952 has 20 divisors (see below), whose sum is σ = 320378676. Its totient is φ = 82521600.

The previous prime is 165199919. The next prime is 165199973. The reversal of 165199952 is 259991561.

165199952 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41011216 + 124188736 = 6404^2 + 11144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165199897 and 165199906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14918 + ... + 23514.

Almost surely, 2^165199952 is an apocalyptic number.

It is an amenable number.

165199952 is a deficient number, since it is larger than the sum of its proper divisors (155178724).

165199952 is a wasteful number, since it uses less digits than its factorization.

165199952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806 (or 9800 counting only the distinct ones).

The product of its digits is 218700, while the sum is 47.

The square root of 165199952 is about 12853.0133431814. The cubic root of 165199952 is about 548.7021209673.

The spelling of 165199952 in words is "one hundred sixty-five million, one hundred ninety-nine thousand, nine hundred fifty-two".