22432561 has 8 divisors (see below), whose sum is σ = 23247104. Its totient is φ = 21623760.

The previous prime is 22432547. The next prime is 22432577. The reversal of 22432561 is 16523422.

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 22432561 - 2⁷ = 22432433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22432591) 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, 7495 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (2905888).

Almost surely, 2^22432561 is an apocalyptic number.

It is an amenable number.

22432561 is a deficient number, since it is larger than the sum of its proper divisors (814543).

22432561 is a wasteful number, since it uses less digits than its factorization.

22432561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its digits is 2880, while the sum is 25.

The square root of 22432561 is about 4736.3024607810. The cubic root of 22432561 is about 282.0284707100.

Adding to 22432561 its reverse (16523422), we get a palindrome (38955983).

The spelling of 22432561 in words is "twenty-two million, four hundred thirty-two thousand, five hundred sixty-one".