22500307 has 2 divisors, whose sum is σ = 22500308. Its totient is φ = 22500306.

The previous prime is 22500287. The next prime is 22500319. The reversal of 22500307 is 70300522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22500307 is a prime.

It is not a weakly prime, because it can be changed into another prime (22500377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11250153 + 11250154.

It is an arithmetic number, because the mean of its divisors is an integer number (11250154).

Almost surely, 2^22500307 is an apocalyptic number.

22500307 is a deficient number, since it is larger than the sum of its proper divisors (1).

22500307 is an equidigital number, since it uses as much as digits as its factorization.

22500307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 22500307 is about 4743.4488507836. The cubic root of 22500307 is about 282.3120926499.

Adding to 22500307 its reverse (70300522), we get a palindrome (92800829).

The spelling of 22500307 in words is "twenty-two million, five hundred thousand, three hundred seven".