22505535 has 96 divisors (see below), whose sum is σ = 46545408. Its totient is φ = 9953280.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505535 is 53550522.

It is a Cunningham number, because it is equal to 4744²-1.

It is not a de Polignac number, because 22505535 - 2¹¹ = 22503487 is a prime.

22505535 is a modest number, since divided by 5535 gives 225 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22505499 and 22505508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 308259 + ... + 308331.

It is an arithmetic number, because the mean of its divisors is an integer number (484848).

Almost surely, 2^22505535 is an apocalyptic number.

22505535 is an abundant number, since it is smaller than the sum of its proper divisors (24039873).

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

22505535 is a wasteful number, since it uses less digits than its factorization.

22505535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 22505535 is about 4743.9998946037. Note that the first 3 decimals coincide. The cubic root of 22505535 is about 282.3339562526. Note that the first 3 decimals are identical.

The spelling of 22505535 in words is "twenty-two million, five hundred five thousand, five hundred thirty-five".