130528987 has 2 divisors, whose sum is σ = 130528988. Its totient is φ = 130528986.

The previous prime is 130528973. The next prime is 130528997. The reversal of 130528987 is 789825031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130528987 is a prime.

It is not a weakly prime, because it can be changed into another prime (130528927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65264493 + 65264494.

It is an arithmetic number, because the mean of its divisors is an integer number (65264494).

Almost surely, 2^130528987 is an apocalyptic number.

130528987 is a deficient number, since it is larger than the sum of its proper divisors (1).

130528987 is an equidigital number, since it uses as much as digits as its factorization.

130528987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 130528987 is about 11424.9283148736. The cubic root of 130528987 is about 507.2658850444.

The spelling of 130528987 in words is "one hundred thirty million, five hundred twenty-eight thousand, nine hundred eighty-seven".