133513500 has 48 divisors (see below), whose sum is σ = 388795680. Its totient is φ = 35603200.

The previous prime is 133513493. The next prime is 133513517. The reversal of 133513500 is 5315331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43005 + ... + 46004.

It is an arithmetic number, because the mean of its divisors is an integer number (8099910).

Almost surely, 2^133513500 is an apocalyptic number.

133513500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133513500 is an abundant number, since it is smaller than the sum of its proper divisors (255282180).

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

133513500 is a wasteful number, since it uses less digits than its factorization.

133513500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89031 (or 89019 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 133513500 is about 11554.8041956582. The cubic root of 133513500 is about 511.1029570568.

Adding to 133513500 its reverse (5315331), we get a palindrome (138828831).

The spelling of 133513500 in words is "one hundred thirty-three million, five hundred thirteen thousand, five hundred".