132551209 has 4 divisors (see below), whose sum is σ = 151487104. Its totient is φ = 113615316.

The previous prime is 132551207. The next prime is 132551213. The reversal of 132551209 is 902155231.

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.

It is a cyclic number.

It is not a de Polignac number, because 132551209 - 2¹ = 132551207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132551203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9467937 + ... + 9467950.

It is an arithmetic number, because the mean of its divisors is an integer number (37871776).

Almost surely, 2^132551209 is an apocalyptic number.

It is an amenable number.

132551209 is a deficient number, since it is larger than the sum of its proper divisors (18935895).

132551209 is an equidigital number, since it uses as much as digits as its factorization.

132551209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935894.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 132551209 is about 11513.0885951599. The cubic root of 132551209 is about 509.8720799255.

The spelling of 132551209 in words is "one hundred thirty-two million, five hundred fifty-one thousand, two hundred nine".