132443521 has 6 divisors (see below), whose sum is σ = 154067010. Its totient is φ = 113522976.

The previous prime is 132443513. The next prime is 132443533. The reversal of 132443521 is 125344231.

It can be written as a sum of positive squares in only one way, i.e., 110250000 + 22193521 = 10500^2 + 4711^2 .

It is not a de Polignac number, because 132443521 - 2³ = 132443513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132443561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1351416 + ... + 1351513.

It is an arithmetic number, because the mean of its divisors is an integer number (25677835).

Almost surely, 2^132443521 is an apocalyptic number.

It is an amenable number.

132443521 is a deficient number, since it is larger than the sum of its proper divisors (21623489).

132443521 is an equidigital number, since it uses as much as digits as its factorization.

132443521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702943 (or 2702936 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 132443521 is about 11508.4108807428. The cubic root of 132443521 is about 509.7339648001.

Adding to 132443521 its reverse (125344231), we get a palindrome (257787752).

The spelling of 132443521 in words is "one hundred thirty-two million, four hundred forty-three thousand, five hundred twenty-one".