22971601 has 2 divisors, whose sum is σ = 22971602. Its totient is φ = 22971600.

The previous prime is 22971593. The next prime is 22971629. The reversal of 22971601 is 10617922.

It is a happy number.

It is an a-pointer prime, because the next prime (22971629) can be obtained adding 22971601 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 123201 = 4780^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 22971601 - 2³ = 22971593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22971601.

It is not a weakly prime, because it can be changed into another prime (22971671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11485800 + 11485801.

It is an arithmetic number, because the mean of its divisors is an integer number (11485801).

Almost surely, 2^22971601 is an apocalyptic number.

It is an amenable number.

22971601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22971601 is an equidigital number, since it uses as much as digits as its factorization.

22971601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 22971601 is about 4792.8698083716. The cubic root of 22971601 is about 284.2696019829.

The spelling of 22971601 in words is "twenty-two million, nine hundred seventy-one thousand, six hundred one".