165015020 has 12 divisors (see below), whose sum is σ = 346531584. Its totient is φ = 66006000.

The previous prime is 165014987. The next prime is 165015029. The reversal of 165015020 is 20510561.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 8250751 = 165015020 / (1 + 6 + 5 + 0 + 1 + 5 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 165014983 and 165015001.

It is not an unprimeable number, because it can be changed into a prime (165015029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125356 + ... + 4125395.

It is an arithmetic number, because the mean of its divisors is an integer number (28877632).

Almost surely, 2^165015020 is an apocalyptic number.

165015020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165015020 is an abundant number, since it is smaller than the sum of its proper divisors (181516564).

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

165015020 is a wasteful number, since it uses less digits than its factorization.

165015020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250760 (or 8250758 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 165015020 is about 12845.8172180675. The cubic root of 165015020 is about 548.4972975250.

Adding to 165015020 its reverse (20510561), we get a palindrome (185525581).

The spelling of 165015020 in words is "one hundred sixty-five million, fifteen thousand, twenty".