22137161 has 4 divisors (see below), whose sum is σ = 22449024. Its totient is φ = 21825300.

The previous prime is 22137139. The next prime is 22137163. The reversal of 22137161 is 16173122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22137161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22137163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155825 + ... + 155966.

It is an arithmetic number, because the mean of its divisors is an integer number (5612256).

Almost surely, 2^22137161 is an apocalyptic number.

It is an amenable number.

22137161 is a deficient number, since it is larger than the sum of its proper divisors (311863).

22137161 is an equidigital number, since it uses as much as digits as its factorization.

22137161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311862.

The product of its digits is 504, while the sum is 23.

The square root of 22137161 is about 4705.0144526877. The cubic root of 22137161 is about 280.7850460309.

The spelling of 22137161 in words is "twenty-two million, one hundred thirty-seven thousand, one hundred sixty-one".