132810581 has 2 divisors, whose sum is σ = 132810582. Its totient is φ = 132810580.

The previous prime is 132810577. The next prime is 132810583. The reversal of 132810581 is 185018231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 17355556 = 10745^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 132810581 - 2² = 132810577 is a prime.

It is a super-2 number, since 2×132810581² = 35277300851115122, which contains 22 as substring.

Together with 132810583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132810583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66405290 + 66405291.

It is an arithmetic number, because the mean of its divisors is an integer number (66405291).

Almost surely, 2^132810581 is an apocalyptic number.

It is an amenable number.

132810581 is a deficient number, since it is larger than the sum of its proper divisors (1).

132810581 is an equidigital number, since it uses as much as digits as its factorization.

132810581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 132810581 is about 11524.3473134056. The cubic root of 132810581 is about 510.2044304114.

The spelling of 132810581 in words is "one hundred thirty-two million, eight hundred ten thousand, five hundred eighty-one".