133543523 has 2 divisors, whose sum is σ = 133543524. Its totient is φ = 133543522.

The previous prime is 133543511. The next prime is 133543547. The reversal of 133543523 is 325345331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133543523 - 2⁴ = 133543507 is a prime.

It is not a weakly prime, because it can be changed into another prime (133543573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66771761 + 66771762.

It is an arithmetic number, because the mean of its divisors is an integer number (66771762).

Almost surely, 2^133543523 is an apocalyptic number.

133543523 is a deficient number, since it is larger than the sum of its proper divisors (1).

133543523 is an equidigital number, since it uses as much as digits as its factorization.

133543523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 29.

The square root of 133543523 is about 11556.1032792200. The cubic root of 133543523 is about 511.1412645289.

Adding to 133543523 its reverse (325345331), we get a palindrome (458888854).

The spelling of 133543523 in words is "one hundred thirty-three million, five hundred forty-three thousand, five hundred twenty-three".