22400173 has 2 divisors, whose sum is σ = 22400174. Its totient is φ = 22400172.

The previous prime is 22400167. The next prime is 22400219. The reversal of 22400173 is 37100422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 842724 = 4643^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 22400173 - 2¹³ = 22391981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22400173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22400773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200086 + 11200087.

It is an arithmetic number, because the mean of its divisors is an integer number (11200087).

Almost surely, 2^22400173 is an apocalyptic number.

It is an amenable number.

22400173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22400173 is an equidigital number, since it uses as much as digits as its factorization.

22400173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 22400173 is about 4732.8821029052. The cubic root of 22400173 is about 281.8926749847.

Adding to 22400173 its reverse (37100422), we get a palindrome (59500595).

The spelling of 22400173 in words is "twenty-two million, four hundred thousand, one hundred seventy-three".