22361587 has 2 divisors, whose sum is σ = 22361588. Its totient is φ = 22361586.

The previous prime is 22361567. The next prime is 22361593. The reversal of 22361587 is 78516322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22361587 is a prime.

It is not a weakly prime, because it can be changed into another prime (22361527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11180793 + 11180794.

It is an arithmetic number, because the mean of its divisors is an integer number (11180794).

Almost surely, 2^22361587 is an apocalyptic number.

22361587 is a deficient number, since it is larger than the sum of its proper divisors (1).

22361587 is an equidigital number, since it uses as much as digits as its factorization.

22361587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 22361587 is about 4728.8039714076. The cubic root of 22361587 is about 281.7307214395.

The spelling of 22361587 in words is "twenty-two million, three hundred sixty-one thousand, five hundred eighty-seven".