133512775 has 24 divisors (see below), whose sum is σ = 181332144. Its totient is φ = 96710400.

The previous prime is 133512767. The next prime is 133512779. The reversal of 133512775 is 577215331.

It is not a de Polignac number, because 133512775 - 2³ = 133512767 is a prime.

It is a super-2 number, since 2×133512775² = 35651322176401250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133512775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133512779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79747 + ... + 81403.

It is an arithmetic number, because the mean of its divisors is an integer number (7555506).

Almost surely, 2^133512775 is an apocalyptic number.

133512775 is a deficient number, since it is larger than the sum of its proper divisors (47819369).

133512775 is a wasteful number, since it uses less digits than its factorization.

133512775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1966 counting only the distinct ones).

The product of its digits is 22050, while the sum is 34.

The square root of 133512775 is about 11554.7728233834. The cubic root of 133512775 is about 511.1020319311.

The spelling of 133512775 in words is "one hundred thirty-three million, five hundred twelve thousand, seven hundred seventy-five".