132521869 has 4 divisors (see below), whose sum is σ = 136796800. Its totient is φ = 128246940.

The previous prime is 132521863. The next prime is 132521891. The reversal of 132521869 is 968125231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 968125231 = 17 ⋅56948543.

It is a cyclic number.

It is not a de Polignac number, because 132521869 - 2⁹ = 132521357 is a prime.

It is a super-2 number, since 2×132521869² = 35124091526506322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132521863) 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, 2137419 + ... + 2137480.

It is an arithmetic number, because the mean of its divisors is an integer number (34199200).

Almost surely, 2^132521869 is an apocalyptic number.

It is an amenable number.

132521869 is a deficient number, since it is larger than the sum of its proper divisors (4274931).

132521869 is an equidigital number, since it uses as much as digits as its factorization.

132521869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274930.

The product of its digits is 25920, while the sum is 37.

The square root of 132521869 is about 11511.8143226861. The cubic root of 132521869 is about 509.8344573572.

The spelling of 132521869 in words is "one hundred thirty-two million, five hundred twenty-one thousand, eight hundred sixty-nine".