165222402 has 16 divisors (see below), whose sum is σ = 335377632. Its totient is φ = 54252000.

The previous prime is 165222401. The next prime is 165222413. The reversal of 165222402 is 204222561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (165222401) 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, 205099 + ... + 205902.

It is an arithmetic number, because the mean of its divisors is an integer number (20961102).

Almost surely, 2^165222402 is an apocalyptic number.

165222402 is an abundant number, since it is smaller than the sum of its proper divisors (170155230).

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

165222402 is a wasteful number, since it uses less digits than its factorization.

165222402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411073.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 165222402 is about 12853.8866495702. The cubic root of 165222402 is about 548.7269753019.

Adding to 165222402 its reverse (204222561), we get a palindrome (369444963).

The spelling of 165222402 in words is "one hundred sixty-five million, two hundred twenty-two thousand, four hundred two".