133012555 has 16 divisors (see below), whose sum is σ = 172166400. Its totient is φ = 98068608.

The previous prime is 133012549. The next prime is 133012571. The reversal of 133012555 is 555210331.

It is a cyclic number.

It is not a de Polignac number, because 133012555 - 2⁹ = 133012043 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 15 ways as a sum of consecutive naturals, for example, 54246 + ... + 56644.

It is an arithmetic number, because the mean of its divisors is an integer number (10760400).

Almost surely, 2^133012555 is an apocalyptic number.

133012555 is a deficient number, since it is larger than the sum of its proper divisors (39153845).

133012555 is a wasteful number, since it uses less digits than its factorization.

133012555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 133012555 is about 11533.1069101088. The cubic root of 133012555 is about 510.4629335005.

Adding to 133012555 its reverse (555210331), we get a palindrome (688222886).

The spelling of 133012555 in words is "one hundred thirty-three million, twelve thousand, five hundred fifty-five".