133283441 has 2 divisors, whose sum is σ = 133283442. Its totient is φ = 133283440.

The previous prime is 133283411. The next prime is 133283443. The reversal of 133283441 is 144382331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114404416 + 18879025 = 10696^2 + 4345^2 .

It is an emirp because it is prime and its reverse (144382331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133283441 - 2²² = 129089137 is a prime.

Together with 133283443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133283443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66641720 + 66641721.

It is an arithmetic number, because the mean of its divisors is an integer number (66641721).

Almost surely, 2^133283441 is an apocalyptic number.

It is an amenable number.

133283441 is a deficient number, since it is larger than the sum of its proper divisors (1).

133283441 is an equidigital number, since it uses as much as digits as its factorization.

133283441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 133283441 is about 11544.8447802472. The cubic root of 133283441 is about 510.8092253699.

The spelling of 133283441 in words is "one hundred thirty-three million, two hundred eighty-three thousand, four hundred forty-one".