133554823 has 2 divisors, whose sum is σ = 133554824. Its totient is φ = 133554822.

The previous prime is 133554791. The next prime is 133554829. The reversal of 133554823 is 328455331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133554823 - 2⁵ = 133554791 is a prime.

It is a super-2 number, since 2×133554823² = 35673781493122658, which contains 22 as substring.

It is equal to p_7568233 and since 133554823 and 7568233 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133554829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66777411 + 66777412.

It is an arithmetic number, because the mean of its divisors is an integer number (66777412).

Almost surely, 2^133554823 is an apocalyptic number.

133554823 is a deficient number, since it is larger than the sum of its proper divisors (1).

133554823 is an equidigital number, since it uses as much as digits as its factorization.

133554823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 133554823 is about 11556.5921880111. The cubic root of 133554823 is about 511.1556811357.

The spelling of 133554823 in words is "one hundred thirty-three million, five hundred fifty-four thousand, eight hundred twenty-three".