133355533 has 2 divisors, whose sum is σ = 133355534. Its totient is φ = 133355532.

The previous prime is 133355507. The next prime is 133355557. The reversal of 133355533 is 335553331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81486729 + 51868804 = 9027^2 + 7202^2 .

It is a cyclic number.

It is not a de Polignac number, because 133355533 - 2¹³ = 133347341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133355495 and 133355504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133305533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66677766 + 66677767.

It is an arithmetic number, because the mean of its divisors is an integer number (66677767).

Almost surely, 2^133355533 is an apocalyptic number.

It is an amenable number.

133355533 is a deficient number, since it is larger than the sum of its proper divisors (1).

133355533 is an equidigital number, since it uses as much as digits as its factorization.

133355533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30375, while the sum is 31.

The square root of 133355533 is about 11547.9666175479. The cubic root of 133355533 is about 510.9013063789.

The spelling of 133355533 in words is "one hundred thirty-three million, three hundred fifty-five thousand, five hundred thirty-three".