32722561 has 2 divisors, whose sum is σ = 32722562. Its totient is φ = 32722560.

The previous prime is 32722559. The next prime is 32722567. The reversal of 32722561 is 16522723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29322225 + 3400336 = 5415^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 32722561 - 2¹ = 32722559 is a prime.

Together with 32722559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32722567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16361280 + 16361281.

It is an arithmetic number, because the mean of its divisors is an integer number (16361281).

Almost surely, 2^32722561 is an apocalyptic number.

It is an amenable number.

32722561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32722561 is an equidigital number, since it uses as much as digits as its factorization.

32722561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 32722561 is about 5720.3637122127. The cubic root of 32722561 is about 319.8520181659.

The spelling of 32722561 in words is "thirty-two million, seven hundred twenty-two thousand, five hundred sixty-one".