133538453 has 2 divisors, whose sum is σ = 133538454. Its totient is φ = 133538452.

The previous prime is 133538401. The next prime is 133538459. The reversal of 133538453 is 354835331.

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., 98763844 + 34774609 = 9938^2 + 5897^2 .

It is a cyclic number.

It is not a de Polignac number, because 133538453 - 2¹⁸ = 133276309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133538459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66769226 + 66769227.

It is an arithmetic number, because the mean of its divisors is an integer number (66769227).

Almost surely, 2^133538453 is an apocalyptic number.

It is an amenable number.

133538453 is a deficient number, since it is larger than the sum of its proper divisors (1).

133538453 is an equidigital number, since it uses as much as digits as its factorization.

133538453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

The square root of 133538453 is about 11555.8839125356. The cubic root of 133538453 is about 511.1347959286.

The spelling of 133538453 in words is "one hundred thirty-three million, five hundred thirty-eight thousand, four hundred fifty-three".