133549747 has 2 divisors, whose sum is σ = 133549748. Its totient is φ = 133549746.

The previous prime is 133549729. The next prime is 133549763. The reversal of 133549747 is 747945331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133549747 is a prime.

It is not a weakly prime, because it can be changed into another prime (133549847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66774873 + 66774874.

It is an arithmetic number, because the mean of its divisors is an integer number (66774874).

Almost surely, 2^133549747 is an apocalyptic number.

133549747 is a deficient number, since it is larger than the sum of its proper divisors (1).

133549747 is an equidigital number, since it uses as much as digits as its factorization.

133549747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 133549747 is about 11556.3725710103. The cubic root of 133549747 is about 511.1492052455.

The spelling of 133549747 in words is "one hundred thirty-three million, five hundred forty-nine thousand, seven hundred forty-seven".