130082581 has 2 divisors, whose sum is σ = 130082582. Its totient is φ = 130082580.

The previous prime is 130082539. The next prime is 130082587. The reversal of 130082581 is 185280031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109014481 + 21068100 = 10441^2 + 4590^2 .

It is an emirp because it is prime and its reverse (185280031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130082581 is a prime.

It is a super-2 number, since 2×130082581² = 33842955759243122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130082587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65041290 + 65041291.

It is an arithmetic number, because the mean of its divisors is an integer number (65041291).

Almost surely, 2^130082581 is an apocalyptic number.

It is an amenable number.

130082581 is a deficient number, since it is larger than the sum of its proper divisors (1).

130082581 is an equidigital number, since it uses as much as digits as its factorization.

130082581 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 28.

The square root of 130082581 is about 11405.3750924728. The cubic root of 130082581 is about 506.6869455084.

The spelling of 130082581 in words is "one hundred thirty million, eighty-two thousand, five hundred eighty-one".