133275971 has 4 divisors (see below), whose sum is σ = 141115752. Its totient is φ = 125436192.

The previous prime is 133275943. The next prime is 133275977. The reversal of 133275971 is 179572331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133275971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133275977) 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, 3919865 + ... + 3919898.

It is an arithmetic number, because the mean of its divisors is an integer number (35278938).

Almost surely, 2^133275971 is an apocalyptic number.

133275971 is a deficient number, since it is larger than the sum of its proper divisors (7839781).

133275971 is an equidigital number, since it uses as much as digits as its factorization.

133275971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7839780.

The product of its digits is 39690, while the sum is 38.

The square root of 133275971 is about 11544.5212546905. The cubic root of 133275971 is about 510.7996822585.

The spelling of 133275971 in words is "one hundred thirty-three million, two hundred seventy-five thousand, nine hundred seventy-one".