133006541 has 2 divisors, whose sum is σ = 133006542. Its totient is φ = 133006540.

The previous prime is 133006519. The next prime is 133006547. The reversal of 133006541 is 145600331.

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., 113337316 + 19669225 = 10646^2 + 4435^2 .

It is a cyclic number.

It is not a de Polignac number, because 133006541 - 2⁶ = 133006477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133006547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66503270 + 66503271.

It is an arithmetic number, because the mean of its divisors is an integer number (66503271).

Almost surely, 2^133006541 is an apocalyptic number.

It is an amenable number.

133006541 is a deficient number, since it is larger than the sum of its proper divisors (1).

133006541 is an equidigital number, since it uses as much as digits as its factorization.

133006541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 133006541 is about 11532.8461794997. The cubic root of 133006541 is about 510.4552400655.

Adding to 133006541 its reverse (145600331), we get a palindrome (278606872).

The spelling of 133006541 in words is "one hundred thirty-three million, six thousand, five hundred forty-one".