132918521 has 4 divisors (see below), whose sum is σ = 133607412. Its totient is φ = 132229632.

The previous prime is 132918497. The next prime is 132918557. The reversal of 132918521 is 125819231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125819231 = 10957 ⋅11483.

It can be written as a sum of positive squares in 2 ways, for example, as 72250000 + 60668521 = 8500^2 + 7789^2 .

It is a cyclic number.

It is not a de Polignac number, because 132918521 - 2²⁶ = 65809657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132948521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344156 + ... + 344541.

It is an arithmetic number, because the mean of its divisors is an integer number (33401853).

Almost surely, 2^132918521 is an apocalyptic number.

It is an amenable number.

132918521 is a deficient number, since it is larger than the sum of its proper divisors (688891).

132918521 is an equidigital number, since it uses as much as digits as its factorization.

132918521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688890.

The product of its digits is 4320, while the sum is 32.

The square root of 132918521 is about 11529.0294908114. The cubic root of 132918521 is about 510.3426135617.

It can be divided in two parts, 13291 and 8521, that added together give a palindrome (21812).

The spelling of 132918521 in words is "one hundred thirty-two million, nine hundred eighteen thousand, five hundred twenty-one".