22315289 has 2 divisors, whose sum is σ = 22315290. Its totient is φ = 22315288.

The previous prime is 22315277. The next prime is 22315303. The reversal of 22315289 is 98251322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19536400 + 2778889 = 4420^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 22315289 - 2⁴ = 22315273 is a prime.

It is a super-3 number, since 3×22315289³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22315889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11157644 + 11157645.

It is an arithmetic number, because the mean of its divisors is an integer number (11157645).

Almost surely, 2^22315289 is an apocalyptic number.

It is an amenable number.

22315289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22315289 is an equidigital number, since it uses as much as digits as its factorization.

22315289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 22315289 is about 4723.9061167640. The cubic root of 22315289 is about 281.5361529410.

The spelling of 22315289 in words is "twenty-two million, three hundred fifteen thousand, two hundred eighty-nine".