133345550 has 48 divisors (see below), whose sum is σ = 268441152. Its totient is φ = 48988800.

The previous prime is 133345549. The next prime is 133345561. The reversal of 133345550 is 55543331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175772 + ... + 176528.

It is an arithmetic number, because the mean of its divisors is an integer number (5592524).

Almost surely, 2^133345550 is an apocalyptic number.

133345550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133345550 is an abundant number, since it is smaller than the sum of its proper divisors (135095602).

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

133345550 is a wasteful number, since it uses less digits than its factorization.

133345550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 133345550 is about 11547.5343688599. The cubic root of 133345550 is about 510.8885573640. Note that the first 3 decimals are identical.

Adding to 133345550 its reverse (55543331), we get a palindrome (188888881).

The spelling of 133345550 in words is "one hundred thirty-three million, three hundred forty-five thousand, five hundred fifty".