32716561 has 2 divisors, whose sum is σ = 32716562. Its totient is φ = 32716560.

The previous prime is 32716531. The next prime is 32716571. The reversal of 32716561 is 16561723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 3825936 = 5375^2 + 1956^2 .

It is a cyclic number.

It is not a de Polignac number, because 32716561 - 2⁷ = 32716433 is a prime.

It is not a weakly prime, because it can be changed into another prime (32716531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16358280 + 16358281.

It is an arithmetic number, because the mean of its divisors is an integer number (16358281).

Almost surely, 2^32716561 is an apocalyptic number.

It is an amenable number.

32716561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32716561 is an equidigital number, since it uses as much as digits as its factorization.

32716561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 32716561 is about 5719.8392459928. The cubic root of 32716561 is about 319.8324676442.

The spelling of 32716561 in words is "thirty-two million, seven hundred sixteen thousand, five hundred sixty-one".