133489537 has 2 divisors, whose sum is σ = 133489538. Its totient is φ = 133489536.

The previous prime is 133489529. The next prime is 133489549. The reversal of 133489537 is 735984331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96510976 + 36978561 = 9824^2 + 6081^2 .

It is a cyclic number.

It is not a de Polignac number, because 133489537 - 2³ = 133489529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133489493 and 133489502.

It is not a weakly prime, because it can be changed into another prime (133489507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66744768 + 66744769.

It is an arithmetic number, because the mean of its divisors is an integer number (66744769).

Almost surely, 2^133489537 is an apocalyptic number.

It is an amenable number.

133489537 is a deficient number, since it is larger than the sum of its proper divisors (1).

133489537 is an equidigital number, since it uses as much as digits as its factorization.

133489537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 133489537 is about 11553.7672211275. The cubic root of 133489537 is about 511.0723776448.

The spelling of 133489537 in words is "one hundred thirty-three million, four hundred eighty-nine thousand, five hundred thirty-seven".