133030556 has 12 divisors (see below), whose sum is σ = 232948968. Its totient is φ = 66473712.

The previous prime is 133030537. The next prime is 133030567. The reversal of 133030556 is 655030331.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2531 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (19412414).

Almost surely, 2^133030556 is an apocalyptic number.

It is an amenable number.

133030556 is a deficient number, since it is larger than the sum of its proper divisors (99918412).

133030556 is a wasteful number, since it uses less digits than its factorization.

133030556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20788 (or 20786 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 133030556 is about 11533.8872892013. The cubic root of 133030556 is about 510.4859599704.

Adding to 133030556 its reverse (655030331), we get a palindrome (788060887).

The spelling of 133030556 in words is "one hundred thirty-three million, thirty thousand, five hundred fifty-six".