133225554 has 64 divisors (see below), whose sum is σ = 333453312. Its totient is φ = 34473600.

The previous prime is 133225553. The next prime is 133225597. The reversal of 133225554 is 455522331.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 210819 + ... + 211449.

It is an arithmetic number, because the mean of its divisors is an integer number (5210208).

Almost surely, 2^133225554 is an apocalyptic number.

133225554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133225554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166726656).

133225554 is an abundant number, since it is smaller than the sum of its proper divisors (200227758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133225554 is a wasteful number, since it uses less digits than its factorization.

133225554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111.

The product of its digits is 18000, while the sum is 30.

The square root of 133225554 is about 11542.3374582448. The cubic root of 133225554 is about 510.7352639555.

Adding to 133225554 its reverse (455522331), we get a palindrome (588747885).

The spelling of 133225554 in words is "one hundred thirty-three million, two hundred twenty-five thousand, five hundred fifty-four".