132581797 has 4 divisors (see below), whose sum is σ = 134398060. Its totient is φ = 130765536.

The previous prime is 132581789. The next prime is 132581803. The reversal of 132581797 is 797185231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797185231 = 71 ⋅11227961.

It can be written as a sum of positive squares in 2 ways, for example, as 45887076 + 86694721 = 6774^2 + 9311^2 .

It is a cyclic number.

It is not a de Polignac number, because 132581797 - 2³ = 132581789 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 (132581717) 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, 908022 + ... + 908167.

It is an arithmetic number, because the mean of its divisors is an integer number (33599515).

Almost surely, 2^132581797 is an apocalyptic number.

It is an amenable number.

132581797 is a deficient number, since it is larger than the sum of its proper divisors (1816263).

132581797 is an equidigital number, since it uses as much as digits as its factorization.

132581797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816262.

The product of its digits is 105840, while the sum is 43.

The square root of 132581797 is about 11514.4169196707. The cubic root of 132581797 is about 509.9112968887.

The spelling of 132581797 in words is "one hundred thirty-two million, five hundred eighty-one thousand, seven hundred ninety-seven".