133516079 has 4 divisors (see below), whose sum is σ = 141369984. Its totient is φ = 125662176.

The previous prime is 133516073. The next prime is 133516093. The reversal of 133516079 is 970615331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970615331 = 7 ⋅138659333.

It is a cyclic number.

It is not a de Polignac number, because 133516079 - 2²⁴ = 116738863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133516073) 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, 3926927 + ... + 3926960.

It is an arithmetic number, because the mean of its divisors is an integer number (35342496).

Almost surely, 2^133516079 is an apocalyptic number.

133516079 is a deficient number, since it is larger than the sum of its proper divisors (7853905).

133516079 is an equidigital number, since it uses as much as digits as its factorization.

133516079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853904.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 133516079 is about 11554.9157937217. The cubic root of 133516079 is about 511.1062479251.

The spelling of 133516079 in words is "one hundred thirty-three million, five hundred sixteen thousand, seventy-nine".