165497472 has 128 divisors (see below), whose sum is σ = 558307200. Its totient is φ = 47278080.

The previous prime is 165497471. The next prime is 165497491. The reversal of 165497472 is 274794561.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (165497471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20772 + ... + 27612.

It is an arithmetic number, because the mean of its divisors is an integer number (4361775).

Almost surely, 2^165497472 is an apocalyptic number.

165497472 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 165497472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279153600).

165497472 is an abundant number, since it is smaller than the sum of its proper divisors (392809728).

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

165497472 is an equidigital number, since it uses as much as digits as its factorization.

165497472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871 (or 6853 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 165497472 is about 12864.5820763832. The cubic root of 165497472 is about 549.0313219312.

The spelling of 165497472 in words is "one hundred sixty-five million, four hundred ninety-seven thousand, four hundred seventy-two".