165908552 has 8 divisors (see below), whose sum is σ = 311078550. Its totient is φ = 82954272.

The previous prime is 165908527. The next prime is 165908563. The reversal of 165908552 is 255809561.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 2937796 = 12766^2 + 1714^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10369277 + ... + 10369292.

Almost surely, 2^165908552 is an apocalyptic number.

It is an amenable number.

165908552 is a deficient number, since it is larger than the sum of its proper divisors (145169998).

165908552 is a wasteful number, since it uses less digits than its factorization.

165908552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738575 (or 20738571 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 165908552 is about 12880.5493671660. The cubic root of 165908552 is about 549.4855266220.

The spelling of 165908552 in words is "one hundred sixty-five million, nine hundred eight thousand, five hundred fifty-two".