33561132 has 48 divisors (see below), whose sum is σ = 86655744. Its totient is φ = 10024000.

The previous prime is 33561103. The next prime is 33561139. The reversal of 33561132 is 23116533.

It is a happy number.

It is a super-2 number, since 2×33561132² = 2252699162242848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33561139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7582 + ... + 11162.

It is an arithmetic number, because the mean of its divisors is an integer number (1805328).

Almost surely, 2^33561132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33561132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43327872).

33561132 is an abundant number, since it is smaller than the sum of its proper divisors (53094612).

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

33561132 is a wasteful number, since it uses less digits than its factorization.

33561132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670 (or 3668 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 33561132 is about 5793.1970448104. The cubic root of 33561132 is about 322.5612551154.

Adding to 33561132 its reverse (23116533), we get a palindrome (56677665).

It can be divided in two parts, 33 and 561132, that added together give a palindrome (561165).

The spelling of 33561132 in words is "thirty-three million, five hundred sixty-one thousand, one hundred thirty-two".