165523372 has 18 divisors (see below), whose sum is σ = 336958692. Its totient is φ = 70938504.

The previous prime is 165523361. The next prime is 165523447. The reversal of 165523372 is 273325561.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422058 + ... + 422449.

Almost surely, 2^165523372 is an apocalyptic number.

It is an amenable number.

165523372 is an abundant number, since it is smaller than the sum of its proper divisors (171435320).

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

165523372 is a wasteful number, since it uses less digits than its factorization.

165523372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844525 (or 844516 counting only the distinct ones).

The product of its digits is 37800, while the sum is 34.

The square root of 165523372 is about 12865.5886767765. The cubic root of 165523372 is about 549.0599611794.

The spelling of 165523372 in words is "one hundred sixty-five million, five hundred twenty-three thousand, three hundred seventy-two".