22397171 has 4 divisors (see below), whose sum is σ = 22560792. Its totient is φ = 22233552.

The previous prime is 22397161. The next prime is 22397183. The reversal of 22397171 is 17179322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22397171 - 2⁶ = 22397107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22397161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81605 + ... + 81878.

It is an arithmetic number, because the mean of its divisors is an integer number (5640198).

Almost surely, 2^22397171 is an apocalyptic number.

22397171 is a deficient number, since it is larger than the sum of its proper divisors (163621).

22397171 is a wasteful number, since it uses less digits than its factorization.

22397171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163620.

The product of its digits is 5292, while the sum is 32.

The square root of 22397171 is about 4732.5649493694. The cubic root of 22397171 is about 281.8800816353.

The spelling of 22397171 in words is "twenty-two million, three hundred ninety-seven thousand, one hundred seventy-one".