165555316 has 48 divisors (see below), whose sum is σ = 326062800. Its totient is φ = 73156608.

The previous prime is 165555307. The next prime is 165555329. The reversal of 165555316 is 613555561.

It can be written as a sum of positive squares in 8 ways, for example, as 1612900 + 163942416 = 1270^2 + 12804^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71830 + ... + 74098.

It is an arithmetic number, because the mean of its divisors is an integer number (6792975).

Almost surely, 2^165555316 is an apocalyptic number.

It is an amenable number.

165555316 is a deficient number, since it is larger than the sum of its proper divisors (160507484).

165555316 is a wasteful number, since it uses less digits than its factorization.

165555316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2354 counting only the distinct ones).

The product of its digits is 67500, while the sum is 37.

The square root of 165555316 is about 12866.8300680471. The cubic root of 165555316 is about 549.0952795416.

The spelling of 165555316 in words is "one hundred sixty-five million, five hundred fifty-five thousand, three hundred sixteen".