33247961 has 2 divisors, whose sum is σ = 33247962. Its totient is φ = 33247960.

The previous prime is 33247933. The next prime is 33247969. The reversal of 33247961 is 16974233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17598025 + 15649936 = 4195^2 + 3956^2 .

It is an emirp because it is prime and its reverse (16974233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33247961 - 2⁶ = 33247897 is a prime.

It is a super-2 number, since 2×33247961² = 2210853821315042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33247969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16623980 + 16623981.

It is an arithmetic number, because the mean of its divisors is an integer number (16623981).

Almost surely, 2^33247961 is an apocalyptic number.

It is an amenable number.

33247961 is a deficient number, since it is larger than the sum of its proper divisors (1).

33247961 is an equidigital number, since it uses as much as digits as its factorization.

33247961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 33247961 is about 5766.1044909020. The cubic root of 33247961 is about 321.5548063654.

The spelling of 33247961 in words is "thirty-three million, two hundred forty-seven thousand, nine hundred sixty-one".