132506993 has 4 divisors (see below), whose sum is σ = 140301540. Its totient is φ = 124712448.

The previous prime is 132506987. The next prime is 132507029. The reversal of 132506993 is 399605231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399605231 = 4591 ⋅87041.

It can be written as a sum of positive squares in 2 ways, for example, as 71791729 + 60715264 = 8473^2 + 7792^2 .

It is a cyclic number.

It is not a de Polignac number, because 132506993 - 2⁴ = 132506977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132506923) 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, 3897248 + ... + 3897281.

It is an arithmetic number, because the mean of its divisors is an integer number (35075385).

Almost surely, 2^132506993 is an apocalyptic number.

It is an amenable number.

132506993 is a deficient number, since it is larger than the sum of its proper divisors (7794547).

132506993 is an equidigital number, since it uses as much as digits as its factorization.

132506993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7794546.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 132506993 is about 11511.1681857229. The cubic root of 132506993 is about 509.8153797986.

The spelling of 132506993 in words is "one hundred thirty-two million, five hundred six thousand, nine hundred ninety-three".