21325592 has 32 divisors (see below), whose sum is σ = 41817600. Its totient is φ = 10185504.

The previous prime is 21325589. The next prime is 21325597. The reversal of 21325592 is 29552312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15509 + ... + 16827.

It is an arithmetic number, because the mean of its divisors is an integer number (1306800).

Almost surely, 2^21325592 is an apocalyptic number.

It is an amenable number.

21325592 is a deficient number, since it is larger than the sum of its proper divisors (20492008).

21325592 is a wasteful number, since it uses less digits than its factorization.

21325592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1411 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 21325592 is about 4617.9640535630. The cubic root of 21325592 is about 277.3109585520.

The spelling of 21325592 in words is "twenty-one million, three hundred twenty-five thousand, five hundred ninety-two".