22531393 has 2 divisors, whose sum is σ = 22531394. Its totient is φ = 22531392.

The previous prime is 22531381. The next prime is 22531417. The reversal of 22531393 is 39313522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22496049 + 35344 = 4743^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 22531393 - 2⁹ = 22530881 is a prime.

It is not a weakly prime, because it can be changed into another prime (22531193) 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, 11265696 + 11265697.

It is an arithmetic number, because the mean of its divisors is an integer number (11265697).

Almost surely, 2^22531393 is an apocalyptic number.

It is an amenable number.

22531393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531393 is an equidigital number, since it uses as much as digits as its factorization.

22531393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 22531393 is about 4746.7244495547. The cubic root of 22531393 is about 282.4420451767.

The spelling of 22531393 in words is "twenty-two million, five hundred thirty-one thousand, three hundred ninety-three".