165516522 has 16 divisors (see below), whose sum is σ = 350505792. Its totient is φ = 51926720.

The previous prime is 165516521. The next prime is 165516529. The reversal of 165516522 is 225615561.

It is a super-3 number, since 3×165516522³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (165516521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811254 + ... + 811457.

It is an arithmetic number, because the mean of its divisors is an integer number (21906612).

Almost surely, 2^165516522 is an apocalyptic number.

165516522 is an abundant number, since it is smaller than the sum of its proper divisors (184989270).

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

165516522 is a wasteful number, since it uses less digits than its factorization.

165516522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622733.

The product of its digits is 18000, while the sum is 33.

The square root of 165516522 is about 12865.3224600085. The cubic root of 165516522 is about 549.0523869970.

The spelling of 165516522 in words is "one hundred sixty-five million, five hundred sixteen thousand, five hundred twenty-two".