133386550 has 24 divisors (see below), whose sum is σ = 270654552. Its totient is φ = 48504000.

The previous prime is 133386529. The next prime is 133386553. The reversal of 133386550 is 55683331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133386553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120711 + ... + 121810.

It is an arithmetic number, because the mean of its divisors is an integer number (11277273).

Almost surely, 2^133386550 is an apocalyptic number.

133386550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133386550 is an abundant number, since it is smaller than the sum of its proper divisors (137268002).

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

133386550 is a wasteful number, since it uses less digits than its factorization.

133386550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242544 (or 242539 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 133386550 is about 11549.3095031694. The cubic root of 133386550 is about 510.9409132779.

It can be divided in two parts, 133 and 386550, that added together give a palindrome (386683).

The spelling of 133386550 in words is "one hundred thirty-three million, three hundred eighty-six thousand, five hundred fifty".