22043251 has 2 divisors, whose sum is σ = 22043252. Its totient is φ = 22043250.

The previous prime is 22043243. The next prime is 22043257. The reversal of 22043251 is 15234022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22043251 - 2³ = 22043243 is a prime.

It is not a weakly prime, because it can be changed into another prime (22043257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021625 + 11021626.

It is an arithmetic number, because the mean of its divisors is an integer number (11021626).

Almost surely, 2^22043251 is an apocalyptic number.

22043251 is a deficient number, since it is larger than the sum of its proper divisors (1).

22043251 is an equidigital number, since it uses as much as digits as its factorization.

22043251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22043251 is about 4695.0240680959. The cubic root of 22043251 is about 280.3874355974.

Adding to 22043251 its reverse (15234022), we get a palindrome (37277273).

The spelling of 22043251 in words is "twenty-two million, forty-three thousand, two hundred fifty-one".