22415143 has 2 divisors, whose sum is σ = 22415144. Its totient is φ = 22415142.

The previous prime is 22415123. The next prime is 22415177. The reversal of 22415143 is 34151422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22415143 - 2²¹ = 20317991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22415123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11207571 + 11207572.

It is an arithmetic number, because the mean of its divisors is an integer number (11207572).

Almost surely, 2^22415143 is an apocalyptic number.

22415143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22415143 is an equidigital number, since it uses as much as digits as its factorization.

22415143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 22415143 is about 4734.4633275589. The cubic root of 22415143 is about 281.9554571432.

Adding to 22415143 its reverse (34151422), we get a palindrome (56566565).

The spelling of 22415143 in words is "twenty-two million, four hundred fifteen thousand, one hundred forty-three".