130521047 has 2 divisors, whose sum is σ = 130521048. Its totient is φ = 130521046.

The previous prime is 130521011. The next prime is 130521059. The reversal of 130521047 is 740125031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 130521047 - 2¹⁴ = 130504663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130521247) 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, 65260523 + 65260524.

It is an arithmetic number, because the mean of its divisors is an integer number (65260524).

Almost surely, 2^130521047 is an apocalyptic number.

130521047 is a deficient number, since it is larger than the sum of its proper divisors (1).

130521047 is an equidigital number, since it uses as much as digits as its factorization.

130521047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 130521047 is about 11424.5808238202. The cubic root of 130521047 is about 507.2555992760.

Adding to 130521047 its reverse (740125031), we get a palindrome (870646078).

The spelling of 130521047 in words is "one hundred thirty million, five hundred twenty-one thousand, forty-seven".