32020561 has 2 divisors, whose sum is σ = 32020562. Its totient is φ = 32020560.

The previous prime is 32020559. The next prime is 32020589. The reversal of 32020561 is 16502023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16966161 + 15054400 = 4119^2 + 3880^2 .

It is an emirp because it is prime and its reverse (16502023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32020561 - 2¹ = 32020559 is a prime.

Together with 32020559, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32020511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16010280 + 16010281.

It is an arithmetic number, because the mean of its divisors is an integer number (16010281).

Almost surely, 2^32020561 is an apocalyptic number.

It is an amenable number.

32020561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32020561 is an equidigital number, since it uses as much as digits as its factorization.

32020561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 32020561 is about 5658.6713104756. The cubic root of 32020561 is about 317.5481928209.

Adding to 32020561 its reverse (16502023), we get a palindrome (48522584).

The spelling of 32020561 in words is "thirty-two million, twenty thousand, five hundred sixty-one".