22167487 has 2 divisors, whose sum is σ = 22167488. Its totient is φ = 22167486.

The previous prime is 22167451. The next prime is 22167491. The reversal of 22167487 is 78476122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22167487 - 2⁷ = 22167359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22167437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11083743 + 11083744.

It is an arithmetic number, because the mean of its divisors is an integer number (11083744).

Almost surely, 2^22167487 is an apocalyptic number.

22167487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22167487 is an equidigital number, since it uses as much as digits as its factorization.

22167487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 37.

The square root of 22167487 is about 4708.2360815915. The cubic root of 22167487 is about 280.9132046199.

The spelling of 22167487 in words is "twenty-two million, one hundred sixty-seven thousand, four hundred eighty-seven".