132506391 has 4 divisors (see below), whose sum is σ = 176675192. Its totient is φ = 88337592.

The previous prime is 132506371. The next prime is 132506411. The reversal of 132506391 is 193605231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (132506371) and next prime (132506411).

It is not a de Polignac number, because 132506391 - 2²² = 128312087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132506321) 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, 22084396 + ... + 22084401.

It is an arithmetic number, because the mean of its divisors is an integer number (44168798).

Almost surely, 2^132506391 is an apocalyptic number.

132506391 is a deficient number, since it is larger than the sum of its proper divisors (44168801).

132506391 is an equidigital number, since it uses as much as digits as its factorization.

132506391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44168800.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 132506391 is about 11511.1420371742. The cubic root of 132506391 is about 509.8146077404.

The spelling of 132506391 in words is "one hundred thirty-two million, five hundred six thousand, three hundred ninety-one".