130973561 has 2 divisors, whose sum is σ = 130973562. Its totient is φ = 130973560.

The previous prime is 130973519. The next prime is 130973587. The reversal of 130973561 is 165379031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125865961 + 5107600 = 11219^2 + 2260^2 .

It is an emirp because it is prime and its reverse (165379031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130973561 - 2⁶ = 130973497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (130973501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65486780 + 65486781.

It is an arithmetic number, because the mean of its divisors is an integer number (65486781).

Almost surely, 2^130973561 is an apocalyptic number.

It is an amenable number.

130973561 is a deficient number, since it is larger than the sum of its proper divisors (1).

130973561 is an equidigital number, since it uses as much as digits as its factorization.

130973561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 130973561 is about 11444.3680908996. The cubic root of 130973561 is about 507.8411383000.

The spelling of 130973561 in words is "one hundred thirty million, nine hundred seventy-three thousand, five hundred sixty-one".