165796550 has 24 divisors (see below), whose sum is σ = 311444352. Its totient is φ = 65660000.

The previous prime is 165796541. The next prime is 165796577. The reversal of 165796550 is 55697561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11366 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (12976848).

Almost surely, 2^165796550 is an apocalyptic number.

165796550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165796550 is a deficient number, since it is larger than the sum of its proper divisors (145647802).

165796550 is a wasteful number, since it uses less digits than its factorization.

165796550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32944 (or 32939 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 165796550 is about 12876.2009148662. The cubic root of 165796550 is about 549.3618493886.

The spelling of 165796550 in words is "one hundred sixty-five million, seven hundred ninety-six thousand, five hundred fifty".