22532987 has 2 divisors, whose sum is σ = 22532988. Its totient is φ = 22532986.

The previous prime is 22532977. The next prime is 22533011. The reversal of 22532987 is 78923522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22532987 - 2¹⁰ = 22531963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22532987.

It is not a weakly prime, because it can be changed into another prime (22532927) 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, 11266493 + 11266494.

It is an arithmetic number, because the mean of its divisors is an integer number (11266494).

Almost surely, 2^22532987 is an apocalyptic number.

22532987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22532987 is an equidigital number, since it uses as much as digits as its factorization.

22532987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 22532987 is about 4746.8923518445. The cubic root of 22532987 is about 282.4487055432.

The spelling of 22532987 in words is "twenty-two million, five hundred thirty-two thousand, nine hundred eighty-seven".