165001560 has 32 divisors (see below), whose sum is σ = 495005040. Its totient is φ = 44000384.

The previous prime is 165001547. The next prime is 165001601. The reversal of 165001560 is 65100561.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 165001560.

It is a congruent number.

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, 687387 + ... + 687626.

Almost surely, 2^165001560 is an apocalyptic number.

165001560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165001560 is an abundant number, since it is smaller than the sum of its proper divisors (330003480).

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

165001560 is a wasteful number, since it uses less digits than its factorization.

165001560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375027 (or 1375023 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 165001560 is about 12845.2933014392. The cubic root of 165001560 is about 548.4823837829.

Subtracting from 165001560 its reverse (65100561), we obtain a palindrome (99900999).

It can be divided in two parts, 165001 and 560, that added together give a palindrome (165561).

The spelling of 165001560 in words is "one hundred sixty-five million, one thousand, five hundred sixty".