133117554 has 16 divisors (see below), whose sum is σ = 266787648. Its totient is φ = 44280432.

The previous prime is 133117547. The next prime is 133117571. The reversal of 133117554 is 455711331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19857 + ... + 25700.

It is an arithmetic number, because the mean of its divisors is an integer number (16674228).

Almost surely, 2^133117554 is an apocalyptic number.

133117554 is an abundant number, since it is smaller than the sum of its proper divisors (133670094).

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

133117554 is a wasteful number, since it uses less digits than its factorization.

133117554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46049.

The product of its digits is 6300, while the sum is 30.

The square root of 133117554 is about 11537.6580812572. The cubic root of 133117554 is about 510.5972165648.

Adding to 133117554 its reverse (455711331), we get a palindrome (588828885).

The spelling of 133117554 in words is "one hundred thirty-three million, one hundred seventeen thousand, five hundred fifty-four".