161305022 has 32 divisors (see below), whose sum is σ = 260064000. Its totient is φ = 74815488.

The previous prime is 161305019. The next prime is 161305051. The reversal of 161305022 is 220503161.

It is a junction number, because it is equal to n+sod(n) for n = 161304985 and 161305003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627518 + ... + 627774.

It is an arithmetic number, because the mean of its divisors is an integer number (8127000).

Almost surely, 2^161305022 is an apocalyptic number.

161305022 is a deficient number, since it is larger than the sum of its proper divisors (98758978).

161305022 is a wasteful number, since it uses less digits than its factorization.

161305022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 161305022 is about 12700.5914035528. The cubic root of 161305022 is about 544.3555179517.

Adding to 161305022 its reverse (220503161), we get a palindrome (381808183).

The spelling of 161305022 in words is "one hundred sixty-one million, three hundred five thousand, twenty-two".