32224561 has 4 divisors (see below), whose sum is σ = 32770800. Its totient is φ = 31678324.

The previous prime is 32224529. The next prime is 32224567. The reversal of 32224561 is 16542223.

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: 16542223 = 193 ⋅85711.

It is a cyclic number.

It is not a de Polignac number, because 32224561 - 2⁵ = 32224529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32224567) 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, 273031 + ... + 273148.

It is an arithmetic number, because the mean of its divisors is an integer number (8192700).

Almost surely, 2^32224561 is an apocalyptic number.

It is an amenable number.

32224561 is a deficient number, since it is larger than the sum of its proper divisors (546239).

32224561 is an equidigital number, since it uses as much as digits as its factorization.

32224561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546238.

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

The square root of 32224561 is about 5676.6681248775. The cubic root of 32224561 is about 318.2211223951.

Adding to 32224561 its reverse (16542223), we get a palindrome (48766784).

The spelling of 32224561 in words is "thirty-two million, two hundred twenty-four thousand, five hundred sixty-one".