22250161 has 8 divisors (see below), whose sum is σ = 23674464. Its totient is φ = 20838720.

The previous prime is 22250153. The next prime is 22250203. The reversal of 22250161 is 16105222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22250161 - 2³ = 22250153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22250101) 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 7 ways as a sum of consecutive naturals, for example, 486 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (2959308).

Almost surely, 2^22250161 is an apocalyptic number.

It is an amenable number.

22250161 is a deficient number, since it is larger than the sum of its proper divisors (1424303).

22250161 is a wasteful number, since it uses less digits than its factorization.

22250161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6431.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 22250161 is about 4717.0076319633. The cubic root of 22250161 is about 281.2619948135.

Adding to 22250161 its reverse (16105222), we get a palindrome (38355383).

The spelling of 22250161 in words is "twenty-two million, two hundred fifty thousand, one hundred sixty-one".