33240257 has 2 divisors, whose sum is σ = 33240258. Its totient is φ = 33240256.

The previous prime is 33240239. The next prime is 33240269. The reversal of 33240257 is 75204233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 9024016 = 4921^2 + 3004^2 .

It is a cyclic number.

It is not a de Polignac number, because 33240257 - 2⁸ = 33240001 is a prime.

It is a super-2 number, since 2×33240257² = 2209829370852098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33240227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16620128 + 16620129.

It is an arithmetic number, because the mean of its divisors is an integer number (16620129).

Almost surely, 2^33240257 is an apocalyptic number.

It is an amenable number.

33240257 is a deficient number, since it is larger than the sum of its proper divisors (1).

33240257 is an equidigital number, since it uses as much as digits as its factorization.

33240257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 33240257 is about 5765.4364101948. The cubic root of 33240257 is about 321.5299682549.

The spelling of 33240257 in words is "thirty-three million, two hundred forty thousand, two hundred fifty-seven".