33280061 has 2 divisors, whose sum is σ = 33280062. Its totient is φ = 33280060.

The previous prime is 33280007. The next prime is 33280063. The reversal of 33280061 is 16008233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24068836 + 9211225 = 4906^2 + 3035^2 .

It is an emirp because it is prime and its reverse (16008233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33280061 - 2⁶ = 33279997 is a prime.

It is a super-2 number, since 2×33280061² = 2215124920327442, which contains 22 as substring.

Together with 33280063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33280063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16640030 + 16640031.

It is an arithmetic number, because the mean of its divisors is an integer number (16640031).

Almost surely, 2^33280061 is an apocalyptic number.

It is an amenable number.

33280061 is a deficient number, since it is larger than the sum of its proper divisors (1).

33280061 is an equidigital number, since it uses as much as digits as its factorization.

33280061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 33280061 is about 5768.8873277262. The cubic root of 33280061 is about 321.6582572129.

Adding to 33280061 its reverse (16008233), we get a palindrome (49288294).

The spelling of 33280061 in words is "thirty-three million, two hundred eighty thousand, sixty-one".