22253993 has 2 divisors, whose sum is σ = 22253994. Its totient is φ = 22253992.

The previous prime is 22253963. The next prime is 22254017. The reversal of 22253993 is 39935222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21827584 + 426409 = 4672^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 22253993 - 2¹⁰ = 22252969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22253953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11126996 + 11126997.

It is an arithmetic number, because the mean of its divisors is an integer number (11126997).

Almost surely, 2^22253993 is an apocalyptic number.

It is an amenable number.

22253993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22253993 is an equidigital number, since it uses as much as digits as its factorization.

22253993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 35.

The square root of 22253993 is about 4717.4138041940. The cubic root of 22253993 is about 281.2781405259.

The spelling of 22253993 in words is "twenty-two million, two hundred fifty-three thousand, nine hundred ninety-three".