133530747 has 16 divisors (see below), whose sum is σ = 206926080. Its totient is φ = 75009312.

The previous prime is 133530731. The next prime is 133530751. The reversal of 133530747 is 747035331.

It is a happy number.

It is not a de Polignac number, because 133530747 - 2⁴ = 133530731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133530247) 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 in 15 ways as a sum of consecutive naturals, for example, 52648 + ... + 55125.

It is an arithmetic number, because the mean of its divisors is an integer number (12932880).

Almost surely, 2^133530747 is an apocalyptic number.

133530747 is a deficient number, since it is larger than the sum of its proper divisors (73395333).

133530747 is a wasteful number, since it uses less digits than its factorization.

133530747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107842.

The product of its (nonzero) digits is 26460, while the sum is 33.

The square root of 133530747 is about 11555.5504845074. The cubic root of 133530747 is about 511.1249638530.

The spelling of 133530747 in words is "one hundred thirty-three million, five hundred thirty thousand, seven hundred forty-seven".