133157265 has 32 divisors (see below), whose sum is σ = 221652480. Its totient is φ = 68200704.

The previous prime is 133157237. The next prime is 133157291. The reversal of 133157265 is 562751331.

It is not a de Polignac number, because 133157265 - 2¹⁰ = 133156241 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 42327 + ... + 45363.

It is an arithmetic number, because the mean of its divisors is an integer number (6926640).

Almost surely, 2^133157265 is an apocalyptic number.

133157265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133157265 is a deficient number, since it is larger than the sum of its proper divisors (88495215).

133157265 is a wasteful number, since it uses less digits than its factorization.

133157265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its digits is 18900, while the sum is 33.

The square root of 133157265 is about 11539.3788827649. The cubic root of 133157265 is about 510.6479845002.

The spelling of 133157265 in words is "one hundred thirty-three million, one hundred fifty-seven thousand, two hundred sixty-five".