165642522 has 16 divisors (see below), whose sum is σ = 331618752. Its totient is φ = 55158560.

The previous prime is 165642479. The next prime is 165642541. The reversal of 165642522 is 225246561.

165642522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 7203 + ... + 19574.

It is an arithmetic number, because the mean of its divisors is an integer number (20726172).

Almost surely, 2^165642522 is an apocalyptic number.

165642522 is an abundant number, since it is smaller than the sum of its proper divisors (165976230).

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

165642522 is a wasteful number, since it uses less digits than its factorization.

165642522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27813.

The product of its digits is 28800, while the sum is 33.

The square root of 165642522 is about 12870.2184130651. The cubic root of 165642522 is about 549.1916743074.

The spelling of 165642522 in words is "one hundred sixty-five million, six hundred forty-two thousand, five hundred twenty-two".