130773521 has 2 divisors, whose sum is σ = 130773522. Its totient is φ = 130773520.

The previous prime is 130773509. The next prime is 130773529. The reversal of 130773521 is 125377031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 48163600 = 9089^2 + 6940^2 .

It is a cyclic number.

It is not a de Polignac number, because 130773521 - 2⁶ = 130773457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130773529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65386760 + 65386761.

It is an arithmetic number, because the mean of its divisors is an integer number (65386761).

Almost surely, 2^130773521 is an apocalyptic number.

It is an amenable number.

130773521 is a deficient number, since it is larger than the sum of its proper divisors (1).

130773521 is an equidigital number, since it uses as much as digits as its factorization.

130773521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 130773521 is about 11435.6250812975. The cubic root of 130773521 is about 507.5824593620.

The spelling of 130773521 in words is "one hundred thirty million, seven hundred seventy-three thousand, five hundred twenty-one".