33280997 has 2 divisors, whose sum is σ = 33280998. Its totient is φ = 33280996.

The previous prime is 33280993. The next prime is 33281047. The reversal of 33280997 is 79908233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 11621281 = 4654^2 + 3409^2 .

It is a cyclic number.

It is not a de Polignac number, because 33280997 - 2² = 33280993 is a prime.

It is a super-2 number, since 2×33280997² = 2215249522628018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33280993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16640498 + 16640499.

It is an arithmetic number, because the mean of its divisors is an integer number (16640499).

Almost surely, 2^33280997 is an apocalyptic number.

It is an amenable number.

33280997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33280997 is an equidigital number, since it uses as much as digits as its factorization.

33280997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 33280997 is about 5768.9684519852. The cubic root of 33280997 is about 321.6612727252.

The spelling of 33280997 in words is "thirty-three million, two hundred eighty thousand, nine hundred ninety-seven".