22514281 has 2 divisors, whose sum is σ = 22514282. Its totient is φ = 22514280.

The previous prime is 22514279. The next prime is 22514287. The reversal of 22514281 is 18241522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 9554281 = 3600^2 + 3091^2 .

It is a cyclic number.

It is not a de Polignac number, because 22514281 - 2¹ = 22514279 is a prime.

It is a super-2 number, since 2×22514281² = 1013785697893922, which contains 22 as substring.

Together with 22514279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22514287) 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, 11257140 + 11257141.

It is an arithmetic number, because the mean of its divisors is an integer number (11257141).

Almost surely, 2^22514281 is an apocalyptic number.

It is an amenable number.

22514281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22514281 is an equidigital number, since it uses as much as digits as its factorization.

22514281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 25.

The square root of 22514281 is about 4744.9216010383. The cubic root of 22514281 is about 282.3705246343.

The spelling of 22514281 in words is "twenty-two million, five hundred fourteen thousand, two hundred eighty-one".