132821556 has 72 divisors (see below), whose sum is σ = 363888000. Its totient is φ = 37594368.

The previous prime is 132821531. The next prime is 132821587. The reversal of 132821556 is 655128231.

It is a super-2 number, since 2×132821556² = 35283131476522272, which contains 22 as substring.

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, 65445 + ... + 67443.

It is an arithmetic number, because the mean of its divisors is an integer number (5054000).

Almost surely, 2^132821556 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 132821556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181944000).

132821556 is an abundant number, since it is smaller than the sum of its proper divisors (231066444).

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

132821556 is a wasteful number, since it uses less digits than its factorization.

132821556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 2124 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 132821556 is about 11524.8234693639. The cubic root of 132821556 is about 510.2184838584.

Adding to 132821556 its reverse (655128231), we get a palindrome (787949787).

The spelling of 132821556 in words is "one hundred thirty-two million, eight hundred twenty-one thousand, five hundred fifty-six".