133225556 has 24 divisors (see below), whose sum is σ = 236780544. Its totient is φ = 65581920.

The previous prime is 133225553. The next prime is 133225597. The reversal of 133225556 is 655522331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133225553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77846 + ... + 79538.

It is an arithmetic number, because the mean of its divisors is an integer number (9865856).

Almost surely, 2^133225556 is an apocalyptic number.

It is an amenable number.

133225556 is a deficient number, since it is larger than the sum of its proper divisors (103554988).

133225556 is a wasteful number, since it uses less digits than its factorization.

133225556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its digits is 27000, while the sum is 32.

The square root of 133225556 is about 11542.3375448823. The cubic root of 133225556 is about 510.7352665113.

Adding to 133225556 its reverse (655522331), we get a palindrome (788747887).

The spelling of 133225556 in words is "one hundred thirty-three million, two hundred twenty-five thousand, five hundred fifty-six".