130202561 has 2 divisors, whose sum is σ = 130202562. Its totient is φ = 130202560.

The previous prime is 130202543. The next prime is 130202587. The reversal of 130202561 is 165202031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 31080625 = 9956^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 130202561 - 2¹⁸ = 129940417 is a prime.

It is not a weakly prime, because it can be changed into another prime (130202521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65101280 + 65101281.

It is an arithmetic number, because the mean of its divisors is an integer number (65101281).

Almost surely, 2^130202561 is an apocalyptic number.

It is an amenable number.

130202561 is a deficient number, since it is larger than the sum of its proper divisors (1).

130202561 is an equidigital number, since it uses as much as digits as its factorization.

130202561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 130202561 is about 11410.6336809136. The cubic root of 130202561 is about 506.8426763743.

Adding to 130202561 its reverse (165202031), we get a palindrome (295404592).

The spelling of 130202561 in words is "one hundred thirty million, two hundred two thousand, five hundred sixty-one".