133375279 has 4 divisors (see below), whose sum is σ = 133444000. Its totient is φ = 133306560.

The previous prime is 133375261. The next prime is 133375283. The reversal of 133375279 is 972573331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133375279 - 2¹¹ = 133373231 is a prime.

It is a pancake number, because a pancake can be divided into 133375279 parts by 16332 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133375259) 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 3 ways as a sum of consecutive naturals, for example, 31362 + ... + 35359.

It is an arithmetic number, because the mean of its divisors is an integer number (33361000).

Almost surely, 2^133375279 is an apocalyptic number.

133375279 is a deficient number, since it is larger than the sum of its proper divisors (68721).

133375279 is an equidigital number, since it uses as much as digits as its factorization.

133375279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68720.

The product of its digits is 119070, while the sum is 40.

The square root of 133375279 is about 11548.8215416119. The cubic root of 133375279 is about 510.9265215789.

The spelling of 133375279 in words is "one hundred thirty-three million, three hundred seventy-five thousand, two hundred seventy-nine".