22521773 has 2 divisors, whose sum is σ = 22521774. Its totient is φ = 22521772.

The previous prime is 22521769. The next prime is 22521803. The reversal of 22521773 is 37712522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 964324 = 4643^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 22521773 - 2² = 22521769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22521713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260886 + 11260887.

It is an arithmetic number, because the mean of its divisors is an integer number (11260887).

Almost surely, 2^22521773 is an apocalyptic number.

It is an amenable number.

22521773 is a deficient number, since it is larger than the sum of its proper divisors (1).

22521773 is an equidigital number, since it uses as much as digits as its factorization.

22521773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 29.

The square root of 22521773 is about 4745.7110110077. The cubic root of 22521773 is about 282.4018423175.

The spelling of 22521773 in words is "twenty-two million, five hundred twenty-one thousand, seven hundred seventy-three".