22248857 has 2 divisors, whose sum is σ = 22248858. Its totient is φ = 22248856.

The previous prime is 22248851. The next prime is 22248871. The reversal of 22248857 is 75884222.

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., 20620681 + 1628176 = 4541^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 22248857 - 2¹⁰ = 22247833 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22248857.

It is not a weakly prime, because it can be changed into another prime (22248851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11124428 + 11124429.

It is an arithmetic number, because the mean of its divisors is an integer number (11124429).

Almost surely, 2^22248857 is an apocalyptic number.

It is an amenable number.

22248857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22248857 is an equidigital number, since it uses as much as digits as its factorization.

22248857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 38.

The square root of 22248857 is about 4716.8694067146. The cubic root of 22248857 is about 281.2565001296.

The spelling of 22248857 in words is "twenty-two million, two hundred forty-eight thousand, eight hundred fifty-seven".