165015213 has 16 divisors (see below), whose sum is σ = 240241152. Its totient is φ = 99918000.

The previous prime is 165015211. The next prime is 165015241. The reversal of 165015213 is 312510561.

It is not a de Polignac number, because 165015213 - 2¹ = 165015211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165015211) 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, 59058 + ... + 61788.

It is an arithmetic number, because the mean of its divisors is an integer number (15015072).

Almost surely, 2^165015213 is an apocalyptic number.

It is an amenable number.

165015213 is a deficient number, since it is larger than the sum of its proper divisors (75225939).

165015213 is a wasteful number, since it uses less digits than its factorization.

165015213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576.

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

The square root of 165015213 is about 12845.8247302382. The cubic root of 165015213 is about 548.4975113640.

Adding to 165015213 its reverse (312510561), we get a palindrome (477525774).

The spelling of 165015213 in words is "one hundred sixty-five million, fifteen thousand, two hundred thirteen".