133720547 has 2 divisors, whose sum is σ = 133720548. Its totient is φ = 133720546.

The previous prime is 133720513. The next prime is 133720549. The reversal of 133720547 is 745027331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133720547 - 2⁸ = 133720291 is a prime.

Together with 133720549, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7577042 and since 133720547 and 7577042 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133720549) 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, 66860273 + 66860274.

It is an arithmetic number, because the mean of its divisors is an integer number (66860274).

Almost surely, 2^133720547 is an apocalyptic number.

133720547 is a deficient number, since it is larger than the sum of its proper divisors (1).

133720547 is an equidigital number, since it uses as much as digits as its factorization.

133720547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 133720547 is about 11563.7600718797. The cubic root of 133720547 is about 511.3670194411.

Adding to 133720547 its reverse (745027331), we get a palindrome (878747878).

The spelling of 133720547 in words is "one hundred thirty-three million, seven hundred twenty thousand, five hundred forty-seven".