22514257 has 2 divisors, whose sum is σ = 22514258. Its totient is φ = 22514256.

The previous prime is 22514231. The next prime is 22514279. The reversal of 22514257 is 75241522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 9235521 = 3644^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 22514257 - 2¹¹ = 22512209 is a prime.

It is not a weakly prime, because it can be changed into another prime (22514227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11257128 + 11257129.

It is an arithmetic number, because the mean of its divisors is an integer number (11257129).

Almost surely, 2^22514257 is an apocalyptic number.

It is an amenable number.

22514257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22514257 is an equidigital number, since it uses as much as digits as its factorization.

22514257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 28.

The square root of 22514257 is about 4744.9190720180. The cubic root of 22514257 is about 282.3704242995.

Adding to 22514257 its reverse (75241522), we get a palindrome (97755779).

The spelling of 22514257 in words is "twenty-two million, five hundred fourteen thousand, two hundred fifty-seven".