22081552 has 20 divisors (see below), whose sum is σ = 43201600. Its totient is φ = 10932768.

The previous prime is 22081481. The next prime is 22081561. The reversal of 22081552 is 25518022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5052 + ... + 8347.

It is an arithmetic number, because the mean of its divisors is an integer number (2160080).

Almost surely, 2^22081552 is an apocalyptic number.

It is an amenable number.

22081552 is a deficient number, since it is larger than the sum of its proper divisors (21120048).

22081552 is a wasteful number, since it uses less digits than its factorization.

22081552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13510 (or 13504 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 22081552 is about 4699.1011906534. The cubic root of 22081552 is about 280.5497362987.

Adding to 22081552 its reverse (25518022), we get a palindrome (47599574).

The spelling of 22081552 in words is "twenty-two million, eighty-one thousand, five hundred fifty-two".