33261961 has 2 divisors, whose sum is σ = 33261962. Its totient is φ = 33261960.

The previous prime is 33261941. The next prime is 33261971. The reversal of 33261961 is 16916233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 9884736 = 4835^2 + 3144^2 .

It is an emirp because it is prime and its reverse (16916233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33261961 - 2¹⁹ = 32737673 is a prime.

It is a super-2 number, since 2×33261961² = 2212716099131042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33261941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16630980 + 16630981.

It is an arithmetic number, because the mean of its divisors is an integer number (16630981).

Almost surely, 2^33261961 is an apocalyptic number.

It is an amenable number.

33261961 is a deficient number, since it is larger than the sum of its proper divisors (1).

33261961 is an equidigital number, since it uses as much as digits as its factorization.

33261961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 33261961 is about 5767.3183543134. The cubic root of 33261961 is about 321.5999332989.

The spelling of 33261961 in words is "thirty-three million, two hundred sixty-one thousand, nine hundred sixty-one".