32206561 has 2 divisors, whose sum is σ = 32206562. Its totient is φ = 32206560.

The previous prime is 32206553. The next prime is 32206571. The reversal of 32206561 is 16560223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31990336 + 216225 = 5656^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 32206561 - 2³ = 32206553 is a prime.

It is not a weakly prime, because it can be changed into another prime (32206511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16103280 + 16103281.

It is an arithmetic number, because the mean of its divisors is an integer number (16103281).

Almost surely, 2^32206561 is an apocalyptic number.

It is an amenable number.

32206561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32206561 is an equidigital number, since it uses as much as digits as its factorization.

32206561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 32206561 is about 5675.0824663612. The cubic root of 32206561 is about 318.1618606926.

Adding to 32206561 its reverse (16560223), we get a palindrome (48766784).

The spelling of 32206561 in words is "thirty-two million, two hundred six thousand, five hundred sixty-one".