22900561 has 4 divisors (see below), whose sum is σ = 22926400. Its totient is φ = 22874724.

The previous prime is 22900541. The next prime is 22900583. The reversal of 22900561 is 16500922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16500922 = 2 ⋅8250461.

It is a cyclic number.

It is not a de Polignac number, because 22900561 - 2⁹ = 22900049 is a prime.

It is a super-2 number, since 2×22900561² = 1048871388229442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22900531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11541 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (5731600).

Almost surely, 2^22900561 is an apocalyptic number.

It is an amenable number.

22900561 is a deficient number, since it is larger than the sum of its proper divisors (25839).

22900561 is an equidigital number, since it uses as much as digits as its factorization.

22900561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25838.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 22900561 is about 4785.4530611009. The cubic root of 22900561 is about 283.9762634728.

The spelling of 22900561 in words is "twenty-two million, nine hundred thousand, five hundred sixty-one".