133288955 has 4 divisors (see below), whose sum is σ = 159946752. Its totient is φ = 106631160.

The previous prime is 133288951. The next prime is 133288957. The reversal of 133288955 is 559882331.

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

It is not a de Polignac number, because 133288955 - 2² = 133288951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133288951) 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, 13328891 + ... + 13328900.

It is an arithmetic number, because the mean of its divisors is an integer number (39986688).

Almost surely, 2^133288955 is an apocalyptic number.

133288955 is a deficient number, since it is larger than the sum of its proper divisors (26657797).

133288955 is an equidigital number, since it uses as much as digits as its factorization.

133288955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26657796.

The product of its digits is 259200, while the sum is 44.

The square root of 133288955 is about 11545.0835856654. The cubic root of 133288955 is about 510.8162694138.

The spelling of 133288955 in words is "one hundred thirty-three million, two hundred eighty-eight thousand, nine hundred fifty-five".