22645057 has 2 divisors, whose sum is σ = 22645058. Its totient is φ = 22645056.

The previous prime is 22645043. The next prime is 22645061. The reversal of 22645057 is 75054622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15241216 + 7403841 = 3904^2 + 2721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22645057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22645067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322528 + 11322529.

It is an arithmetic number, because the mean of its divisors is an integer number (11322529).

Almost surely, 2^22645057 is an apocalyptic number.

It is an amenable number.

22645057 is a deficient number, since it is larger than the sum of its proper divisors (1).

22645057 is an equidigital number, since it uses as much as digits as its factorization.

22645057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 22645057 is about 4758.6822755885. The cubic root of 22645057 is about 282.9161933915.

Adding to 22645057 its reverse (75054622), we get a palindrome (97699679).

The spelling of 22645057 in words is "twenty-two million, six hundred forty-five thousand, fifty-seven".