22561973 has 8 divisors (see below), whose sum is σ = 26096448. Its totient is φ = 19105344.

The previous prime is 22561969. The next prime is 22561991. The reversal of 22561973 is 37916522.

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 22561973 - 2² = 22561969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561933) 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, 18836 + ... + 19997.

It is an arithmetic number, because the mean of its divisors is an integer number (3262056).

Almost surely, 2^22561973 is an apocalyptic number.

It is an amenable number.

22561973 is a deficient number, since it is larger than the sum of its proper divisors (3534475).

22561973 is an equidigital number, since it uses as much as digits as its factorization.

22561973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38923.

The product of its digits is 22680, while the sum is 35.

The square root of 22561973 is about 4749.9445259919. The cubic root of 22561973 is about 282.5697658377.

The spelling of 22561973 in words is "twenty-two million, five hundred sixty-one thousand, nine hundred seventy-three".