165541512 has 96 divisors (see below), whose sum is σ = 455342400. Its totient is φ = 50082816.

The previous prime is 165541507. The next prime is 165541531. The reversal of 165541512 is 215145561.

It is a super-2 number, since 2×165541512² = 54807984390492288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165541512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200733 + ... + 201555.

It is an arithmetic number, because the mean of its divisors is an integer number (4743150).

Almost surely, 2^165541512 is an apocalyptic number.

165541512 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 165541512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227671200).

165541512 is an abundant number, since it is smaller than the sum of its proper divisors (289800888).

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

165541512 is a wasteful number, since it uses less digits than its factorization.

165541512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 874 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 165541512 is about 12866.2936388068. The cubic root of 165541512 is about 549.0800179318.

The spelling of 165541512 in words is "one hundred sixty-five million, five hundred forty-one thousand, five hundred twelve".