22520791 has 8 divisors (see below), whose sum is σ = 23363280. Its totient is φ = 21682752.

The previous prime is 22520789. The next prime is 22520803. The reversal of 22520791 is 19702522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22520791 - 2¹ = 22520789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11971 + ... + 13723.

It is an arithmetic number, because the mean of its divisors is an integer number (2920410).

Almost surely, 2^22520791 is an apocalyptic number.

22520791 is a deficient number, since it is larger than the sum of its proper divisors (842489).

22520791 is a wasteful number, since it uses less digits than its factorization.

22520791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 22520791 is about 4745.6075480385. The cubic root of 22520791 is about 282.3977378058.

The spelling of 22520791 in words is "twenty-two million, five hundred twenty thousand, seven hundred ninety-one".