32880821 has 2 divisors, whose sum is σ = 32880822. Its totient is φ = 32880820.

The previous prime is 32880817. The next prime is 32880833. The reversal of 32880821 is 12808823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 13608721 = 4390^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 32880821 - 2² = 32880817 is a prime.

It is a super-2 number, since 2×32880821² = 2162296779268082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32880851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16440410 + 16440411.

It is an arithmetic number, because the mean of its divisors is an integer number (16440411).

Almost surely, 2^32880821 is an apocalyptic number.

It is an amenable number.

32880821 is a deficient number, since it is larger than the sum of its proper divisors (1).

32880821 is an equidigital number, since it uses as much as digits as its factorization.

32880821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 32880821 is about 5734.1800634441. The cubic root of 32880821 is about 320.3668351735.

The spelling of 32880821 in words is "thirty-two million, eight hundred eighty thousand, eight hundred twenty-one".