133335252 has 72 divisors (see below), whose sum is σ = 344547840. Its totient is φ = 43467840.

The previous prime is 133335211. The next prime is 133335263. The reversal of 133335252 is 252533331.

133335252 is a `hidden beast` number, since 133 + 3 + 3 + 525 + 2 = 666.

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, 491877 + ... + 492147.

Almost surely, 2^133335252 is an apocalyptic number.

133335252 is a gapful number since it is divisible by the number (12) 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 133335252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172273920).

133335252 is an abundant number, since it is smaller than the sum of its proper divisors (211212588).

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

133335252 is a wasteful number, since it uses less digits than its factorization.

133335252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 528 counting only the distinct ones).

The product of its digits is 8100, while the sum is 27.

The square root of 133335252 is about 11547.0884641974. The cubic root of 133335252 is about 510.8754054046.

Adding to 133335252 its reverse (252533331), we get a palindrome (385868583).

It can be divided in two parts, 1333 and 35252, that added together give a triangular number (36585 = T₂₇₀).

The spelling of 133335252 in words is "one hundred thirty-three million, three hundred thirty-five thousand, two hundred fifty-two".