22532809 has 16 divisors (see below), whose sum is σ = 24893568. Its totient is φ = 20270592.

The previous prime is 22532789. The next prime is 22532827. The reversal of 22532809 is 90823522.

It is a cyclic number.

It is not a de Polignac number, because 22532809 - 2¹³ = 22524617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22532869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134844 + ... + 135010.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848).

Almost surely, 2^22532809 is an apocalyptic number.

It is an amenable number.

22532809 is a deficient number, since it is larger than the sum of its proper divisors (2360759).

22532809 is a wasteful number, since it uses less digits than its factorization.

22532809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 22532809 is about 4746.8736026989. The cubic root of 22532809 is about 282.4479618039.

The spelling of 22532809 in words is "twenty-two million, five hundred thirty-two thousand, eight hundred nine".