22043257 has 2 divisors, whose sum is σ = 22043258. Its totient is φ = 22043256.

The previous prime is 22043251. The next prime is 22043261. The reversal of 22043257 is 75234022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17480761 + 4562496 = 4181^2 + 2136^2 .

It is a cyclic number.

It is not a de Polignac number, because 22043257 - 2⁷ = 22043129 is a prime.

It is not a weakly prime, because it can be changed into another prime (22043251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021628 + 11021629.

It is an arithmetic number, because the mean of its divisors is an integer number (11021629).

Almost surely, 2^22043257 is an apocalyptic number.

It is an amenable number.

22043257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22043257 is an equidigital number, since it uses as much as digits as its factorization.

22043257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22043257 is about 4695.0247070702. The cubic root of 22043257 is about 280.3874610372.

Adding to 22043257 its reverse (75234022), we get a palindrome (97277279).

The spelling of 22043257 in words is "twenty-two million, forty-three thousand, two hundred fifty-seven".