11530250521 has 2 divisors, whose sum is σ = 11530250522. Its totient is φ = 11530250520.

The previous prime is 11530250477. The next prime is 11530250549. The reversal of 11530250521 is 12505203511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11527028496 + 3222025 = 107364^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 11530250521 - 2¹⁵ = 11530217753 is a prime.

It is not a weakly prime, because it can be changed into another prime (11530250321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765125260 + 5765125261.

It is an arithmetic number, because the mean of its divisors is an integer number (5765125261).

Almost surely, 2^11530250521 is an apocalyptic number.

It is an amenable number.

11530250521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530250521 is an equidigital number, since it uses as much as digits as its factorization.

11530250521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 11530250521 in words is "eleven billion, five hundred thirty million, two hundred fifty thousand, five hundred twenty-one".