22855487 has 2 divisors, whose sum is σ = 22855488. Its totient is φ = 22855486.

The previous prime is 22855477. The next prime is 22855507. The reversal of 22855487 is 78455822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22855487 - 2¹⁶ = 22789951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22855457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11427743 + 11427744.

It is an arithmetic number, because the mean of its divisors is an integer number (11427744).

Almost surely, 2^22855487 is an apocalyptic number.

22855487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22855487 is an equidigital number, since it uses as much as digits as its factorization.

22855487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179200, while the sum is 41.

The square root of 22855487 is about 4780.7412605160. The cubic root of 22855487 is about 283.7898291299.

The spelling of 22855487 in words is "twenty-two million, eight hundred fifty-five thousand, four hundred eighty-seven".