165371056 has 40 divisors (see below), whose sum is σ = 331630560. Its totient is φ = 79824384.

The previous prime is 165371033. The next prime is 165371069. The reversal of 165371056 is 650173561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80085 + ... + 82123.

It is an arithmetic number, because the mean of its divisors is an integer number (8290764).

Almost surely, 2^165371056 is an apocalyptic number.

165371056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165371056 is an abundant number, since it is smaller than the sum of its proper divisors (166259504).

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

165371056 is a wasteful number, since it uses less digits than its factorization.

165371056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 165371056 is about 12859.6678028633. The cubic root of 165371056 is about 548.8914929611.

The spelling of 165371056 in words is "one hundred sixty-five million, three hundred seventy-one thousand, fifty-six".