22451071 has 2 divisors, whose sum is σ = 22451072. Its totient is φ = 22451070.

The previous prime is 22451069. The next prime is 22451081. The reversal of 22451071 is 17015422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22451071 - 2¹ = 22451069 is a prime.

Together with 22451069, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1415740 and since 22451071 and 1415740 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22451041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11225535 + 11225536.

It is an arithmetic number, because the mean of its divisors is an integer number (11225536).

Almost surely, 2^22451071 is an apocalyptic number.

22451071 is a deficient number, since it is larger than the sum of its proper divisors (1).

22451071 is an equidigital number, since it uses as much as digits as its factorization.

22451071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22451071 is about 4738.2561138039. The cubic root of 22451071 is about 282.1060203607.

Adding to 22451071 its reverse (17015422), we get a palindrome (39466493).

The spelling of 22451071 in words is "twenty-two million, four hundred fifty-one thousand, seventy-one".