32945921 has 2 divisors, whose sum is σ = 32945922. Its totient is φ = 32945920.

The previous prime is 32945903. The next prime is 32945929. The reversal of 32945921 is 12954923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32890225 + 55696 = 5735^2 + 236^2 .

It is an emirp because it is prime and its reverse (12954923) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32945921 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (32945929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16472960 + 16472961.

It is an arithmetic number, because the mean of its divisors is an integer number (16472961).

Almost surely, 2^32945921 is an apocalyptic number.

It is an amenable number.

32945921 is a deficient number, since it is larger than the sum of its proper divisors (1).

32945921 is an equidigital number, since it uses as much as digits as its factorization.

32945921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 32945921 is about 5739.8537437813. The cubic root of 32945921 is about 320.5781248294.

The spelling of 32945921 in words is "thirty-two million, nine hundred forty-five thousand, nine hundred twenty-one".