133145539 has 2 divisors, whose sum is σ = 133145540. Its totient is φ = 133145538.

The previous prime is 133145473. The next prime is 133145567. The reversal of 133145539 is 935541331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133145539 - 2²¹ = 131048387 is a prime.

It is not a weakly prime, because it can be changed into another prime (133145239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66572769 + 66572770.

It is an arithmetic number, because the mean of its divisors is an integer number (66572770).

Almost surely, 2^133145539 is an apocalyptic number.

133145539 is a deficient number, since it is larger than the sum of its proper divisors (1).

133145539 is an equidigital number, since it uses as much as digits as its factorization.

133145539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 133145539 is about 11538.8707853065. The cubic root of 133145539 is about 510.6329946208.

The spelling of 133145539 in words is "one hundred thirty-three million, one hundred forty-five thousand, five hundred thirty-nine".