22081475 has 12 divisors (see below), whose sum is σ = 29487696. Its totient is φ = 16306080.

The previous prime is 22081471. The next prime is 22081481. The reversal of 22081475 is 57418022.

It is not a de Polignac number, because 22081475 - 2² = 22081471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22081471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33647 + ... + 34296.

It is an arithmetic number, because the mean of its divisors is an integer number (2457308).

Almost surely, 2^22081475 is an apocalyptic number.

22081475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22081475 is a deficient number, since it is larger than the sum of its proper divisors (7406221).

22081475 is a wasteful number, since it uses less digits than its factorization.

22081475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67966 (or 67961 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 22081475 is about 4699.0929975901. The cubic root of 22081475 is about 280.5494101992.

Adding to 22081475 its reverse (57418022), we get a palindrome (79499497).

The spelling of 22081475 in words is "twenty-two million, eighty-one thousand, four hundred seventy-five".