130263521 has 2 divisors, whose sum is σ = 130263522. Its totient is φ = 130263520.

The previous prime is 130263499. The next prime is 130263527. The reversal of 130263521 is 125362031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98227921 + 32035600 = 9911^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 130263521 - 2¹⁰ = 130262497 is a prime.

It is a super-3 number, since 3×130263521³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130263527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65131760 + 65131761.

It is an arithmetic number, because the mean of its divisors is an integer number (65131761).

Almost surely, 2^130263521 is an apocalyptic number.

It is an amenable number.

130263521 is a deficient number, since it is larger than the sum of its proper divisors (1).

130263521 is an equidigital number, since it uses as much as digits as its factorization.

130263521 is an odious number, because the sum of its binary digits is odd.

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

The square root of 130263521 is about 11413.3045609061. The cubic root of 130263521 is about 506.9217641911.

The spelling of 130263521 in words is "one hundred thirty million, two hundred sixty-three thousand, five hundred twenty-one".