133530097 has 4 divisors (see below), whose sum is σ = 134038080. Its totient is φ = 133022116.

The previous prime is 133530091. The next prime is 133530107. The reversal of 133530097 is 790035331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133530097 - 2⁷ = 133529969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133530091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253597 + ... + 254122.

It is an arithmetic number, because the mean of its divisors is an integer number (33509520).

Almost surely, 2^133530097 is an apocalyptic number.

It is an amenable number.

133530097 is a deficient number, since it is larger than the sum of its proper divisors (507983).

133530097 is an equidigital number, since it uses as much as digits as its factorization.

133530097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507982.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 133530097 is about 11555.5223594609. The cubic root of 133530097 is about 511.1241345015.

The spelling of 133530097 in words is "one hundred thirty-three million, five hundred thirty thousand, ninety-seven".