133345577 has 2 divisors, whose sum is σ = 133345578. Its totient is φ = 133345576.

The previous prime is 133345561. The next prime is 133345579. The reversal of 133345577 is 775543331.

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., 106419856 + 26925721 = 10316^2 + 5189^2 .

It is a cyclic number.

It is not a de Polignac number, because 133345577 - 2⁴ = 133345561 is a prime.

Together with 133345579, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 133345577.

It is not a weakly prime, because it can be changed into another prime (133345579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66672788 + 66672789.

It is an arithmetic number, because the mean of its divisors is an integer number (66672789).

Almost surely, 2^133345577 is an apocalyptic number.

It is an amenable number.

133345577 is a deficient number, since it is larger than the sum of its proper divisors (1).

133345577 is an equidigital number, since it uses as much as digits as its factorization.

133345577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 38.

The square root of 133345577 is about 11547.5355379406. The cubic root of 133345577 is about 510.8885918458. Note that the first 3 decimals are identical.

The spelling of 133345577 in words is "one hundred thirty-three million, three hundred forty-five thousand, five hundred seventy-seven".