161572214 has 16 divisors (see below), whose sum is σ = 246713040. Its totient is φ = 79344000.

The previous prime is 161572211. The next prime is 161572237. The reversal of 161572214 is 412275161.

161572214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161572214² = 52211160673723592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161572211) 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, 34442 + ... + 38850.

It is an arithmetic number, because the mean of its divisors is an integer number (15419565).

Almost surely, 2^161572214 is an apocalyptic number.

161572214 is a deficient number, since it is larger than the sum of its proper divisors (85140826).

161572214 is a wasteful number, since it uses less digits than its factorization.

161572214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735.

The product of its digits is 3360, while the sum is 29.

The square root of 161572214 is about 12711.1059314286. The cubic root of 161572214 is about 544.6559161317.

The spelling of 161572214 in words is "one hundred sixty-one million, five hundred seventy-two thousand, two hundred fourteen".