22172893 has 2 divisors, whose sum is σ = 22172894. Its totient is φ = 22172892.

The previous prime is 22172827. The next prime is 22172903. The reversal of 22172893 is 39827122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 4549689 = 4198^2 + 2133^2 .

It is a cyclic number.

It is not a de Polignac number, because 22172893 - 2¹⁷ = 22041821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22176893) 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 as a sum of consecutive naturals, namely, 11086446 + 11086447.

It is an arithmetic number, because the mean of its divisors is an integer number (11086447).

Almost surely, 2^22172893 is an apocalyptic number.

It is an amenable number.

22172893 is a deficient number, since it is larger than the sum of its proper divisors (1).

22172893 is an equidigital number, since it uses as much as digits as its factorization.

22172893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 22172893 is about 4708.8101469480. The cubic root of 22172893 is about 280.9360382613.

The spelling of 22172893 in words is "twenty-two million, one hundred seventy-two thousand, eight hundred ninety-three".