133399577 has 2 divisors, whose sum is σ = 133399578. Its totient is φ = 133399576.

The previous prime is 133399559. The next prime is 133399579. The reversal of 133399577 is 775993331.

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., 128686336 + 4713241 = 11344^2 + 2171^2 .

It is a cyclic number.

It is not a de Polignac number, because 133399577 - 2¹⁴ = 133383193 is a prime.

Together with 133399579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133399579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66699788 + 66699789.

It is an arithmetic number, because the mean of its divisors is an integer number (66699789).

Almost surely, 2^133399577 is an apocalyptic number.

It is an amenable number.

133399577 is a deficient number, since it is larger than the sum of its proper divisors (1).

133399577 is an equidigital number, since it uses as much as digits as its factorization.

133399577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 535815, while the sum is 47.

The square root of 133399577 is about 11549.8734625103. The cubic root of 133399577 is about 510.9575461658.

The spelling of 133399577 in words is "one hundred thirty-three million, three hundred ninety-nine thousand, five hundred seventy-seven".