165701172 has 96 divisors (see below), whose sum is σ = 487597824. Its totient is φ = 42624000.

The previous prime is 165701171. The next prime is 165701183. The reversal of 165701172 is 271107561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165701171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42922 + ... + 46622.

It is an arithmetic number, because the mean of its divisors is an integer number (5079144).

Almost surely, 2^165701172 is an apocalyptic number.

165701172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165701172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243798912).

165701172 is an abundant number, since it is smaller than the sum of its proper divisors (321896652).

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

165701172 is a wasteful number, since it uses less digits than its factorization.

165701172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 165701172 is about 12872.4967275195. The cubic root of 165701172 is about 549.2564851431.

The spelling of 165701172 in words is "one hundred sixty-five million, seven hundred one thousand, one hundred seventy-two".