133087553 has 2 divisors, whose sum is σ = 133087554. Its totient is φ = 133087552.

The previous prime is 133087523. The next prime is 133087561. The reversal of 133087553 is 355780331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112954384 + 20133169 = 10628^2 + 4487^2 .

It is a cyclic number.

It is not a de Polignac number, because 133087553 - 2¹⁰ = 133086529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133087523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66543776 + 66543777.

It is an arithmetic number, because the mean of its divisors is an integer number (66543777).

Almost surely, 2^133087553 is an apocalyptic number.

It is an amenable number.

133087553 is a deficient number, since it is larger than the sum of its proper divisors (1).

133087553 is an equidigital number, since it uses as much as digits as its factorization.

133087553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 133087553 is about 11536.3578741299. The cubic root of 133087553 is about 510.5588555384.

The spelling of 133087553 in words is "one hundred thirty-three million, eighty-seven thousand, five hundred fifty-three".