133522500 has 120 divisors (see below), whose sum is σ = 410243680. Its totient is φ = 33696000.

The previous prime is 133522483. The next prime is 133522523. The reversal of 133522500 is 5225331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 142032 + ... + 142968.

Almost surely, 2^133522500 is an apocalyptic number.

133522500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133522500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205121840).

133522500 is an abundant number, since it is smaller than the sum of its proper divisors (276721180).

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

133522500 is a wasteful number, since it uses less digits than its factorization.

133522500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 133522500 is about 11555.1936374948. The cubic root of 133522500 is about 511.1144410971.

Adding to 133522500 its reverse (5225331), we get a palindrome (138747831).

The spelling of 133522500 in words is "one hundred thirty-three million, five hundred twenty-two thousand, five hundred".