130403561 has 2 divisors, whose sum is σ = 130403562. Its totient is φ = 130403560.

The previous prime is 130403513. The next prime is 130403569. The reversal of 130403561 is 165304031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130393561 + 10000 = 11419^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 130403561 - 2¹⁰ = 130402537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130403569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65201780 + 65201781.

It is an arithmetic number, because the mean of its divisors is an integer number (65201781).

Almost surely, 2^130403561 is an apocalyptic number.

It is an amenable number.

130403561 is a deficient number, since it is larger than the sum of its proper divisors (1).

130403561 is an equidigital number, since it uses as much as digits as its factorization.

130403561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 130403561 is about 11419.4378583186. The cubic root of 130403561 is about 507.1033548095.

Adding to 130403561 its reverse (165304031), we get a palindrome (295707592).

The spelling of 130403561 in words is "one hundred thirty million, four hundred three thousand, five hundred sixty-one".