22163501 has 2 divisors, whose sum is σ = 22163502. Its totient is φ = 22163500.

The previous prime is 22163483. The next prime is 22163503. The reversal of 22163501 is 10536122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15007876 + 7155625 = 3874^2 + 2675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22163501 is a prime.

Together with 22163503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22163503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11081750 + 11081751.

It is an arithmetic number, because the mean of its divisors is an integer number (11081751).

Almost surely, 2^22163501 is an apocalyptic number.

It is an amenable number.

22163501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22163501 is an equidigital number, since it uses as much as digits as its factorization.

22163501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22163501 is about 4707.8127617823. The cubic root of 22163501 is about 280.8963663384.

Adding to 22163501 its reverse (10536122), we get a palindrome (32699623).

The spelling of 22163501 in words is "twenty-two million, one hundred sixty-three thousand, five hundred one".