32240561 has 4 divisors (see below), whose sum is σ = 32252532. Its totient is φ = 32228592.

The previous prime is 32240539. The next prime is 32240563. The reversal of 32240561 is 16504223.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 23425600 = 2969^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 32240561 - 2¹⁸ = 31978417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32240563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 8031.

It is an arithmetic number, because the mean of its divisors is an integer number (8063133).

Almost surely, 2^32240561 is an apocalyptic number.

It is an amenable number.

32240561 is a deficient number, since it is larger than the sum of its proper divisors (11971).

32240561 is an equidigital number, since it uses as much as digits as its factorization.

32240561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11970.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 32240561 is about 5678.0772273720. The cubic root of 32240561 is about 318.2737809404.

Adding to 32240561 its reverse (16504223), we get a palindrome (48744784).

The spelling of 32240561 in words is "thirty-two million, two hundred forty thousand, five hundred sixty-one".