32545661 has 2 divisors, whose sum is σ = 32545662. Its totient is φ = 32545660.

The previous prime is 32545637. The next prime is 32545679. The reversal of 32545661 is 16654523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26265625 + 6280036 = 5125^2 + 2506^2 .

It is an emirp because it is prime and its reverse (16654523) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32545661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32545061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16272830 + 16272831.

It is an arithmetic number, because the mean of its divisors is an integer number (16272831).

Almost surely, 2^32545661 is an apocalyptic number.

It is an amenable number.

32545661 is a deficient number, since it is larger than the sum of its proper divisors (1).

32545661 is an equidigital number, since it uses as much as digits as its factorization.

32545661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 32545661 is about 5704.8804544881. The cubic root of 32545661 is about 319.2745970725.

The spelling of 32545661 in words is "thirty-two million, five hundred forty-five thousand, six hundred sixty-one".