21559482 has 48 divisors (see below), whose sum is σ = 53644032. Its totient is φ = 6130080.

The previous prime is 21559463. The next prime is 21559513. The reversal of 21559482 is 28495512.

21559482 is a `hidden beast` number, since 21 + 559 + 4 + 82 = 666.

It is a super-2 number, since 2×21559482² = 929622528216648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49807 + ... + 50237.

It is an arithmetic number, because the mean of its divisors is an integer number (1117584).

Almost surely, 2^21559482 is an apocalyptic number.

21559482 is an abundant number, since it is smaller than the sum of its proper divisors (32084550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21559482 is a wasteful number, since it uses less digits than its factorization.

21559482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 840 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 21559482 is about 4643.2189265638. The cubic root of 21559482 is about 278.3210840781.

The spelling of 21559482 in words is "twenty-one million, five hundred fifty-nine thousand, four hundred eighty-two".