32212561 has 2 divisors, whose sum is σ = 32212562. Its totient is φ = 32212560.

The previous prime is 32212553. The next prime is 32212577. The reversal of 32212561 is 16521223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 14107536 = 4255^2 + 3756^2 .

It is an emirp because it is prime and its reverse (16521223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32212561 - 2³ = 32212553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32212541) 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, 16106280 + 16106281.

It is an arithmetic number, because the mean of its divisors is an integer number (16106281).

Almost surely, 2^32212561 is an apocalyptic number.

It is an amenable number.

32212561 is a deficient number, since it is larger than the sum of its proper divisors (1).

32212561 is an equidigital number, since it uses as much as digits as its factorization.

32212561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 32212561 is about 5675.6110684225. The cubic root of 32212561 is about 318.1816170463.

Adding to 32212561 its reverse (16521223), we get a palindrome (48733784).

The spelling of 32212561 in words is "thirty-two million, two hundred twelve thousand, five hundred sixty-one".