23022257 has 2 divisors, whose sum is σ = 23022258. Its totient is φ = 23022256.

The previous prime is 23022239. The next prime is 23022269. The reversal of 23022257 is 75222032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19351201 + 3671056 = 4399^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 23022257 - 2⁸ = 23022001 is a prime.

It is not a weakly prime, because it can be changed into another prime (23022557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11511128 + 11511129.

It is an arithmetic number, because the mean of its divisors is an integer number (11511129).

Almost surely, 2^23022257 is an apocalyptic number.

It is an amenable number.

23022257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23022257 is an equidigital number, since it uses as much as digits as its factorization.

23022257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 23022257 is about 4798.1514148680. The cubic root of 23022257 is about 284.4784016682.

Adding to 23022257 its reverse (75222032), we get a palindrome (98244289).

The spelling of 23022257 in words is "twenty-three million, twenty-two thousand, two hundred fifty-seven".