7712532521 has 2 divisors, whose sum is σ = 7712532522. Its totient is φ = 7712532520.

The previous prime is 7712532491. The next prime is 7712532547. The reversal of 7712532521 is 1252352177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7437337600 + 275194921 = 86240^2 + 16589^2 .

It is a cyclic number.

It is not a de Polignac number, because 7712532521 - 2¹⁴ = 7712516137 is a prime.

It is not a weakly prime, because it can be changed into another prime (7712532551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856266260 + 3856266261.

It is an arithmetic number, because the mean of its divisors is an integer number (3856266261).

Almost surely, 2^7712532521 is an apocalyptic number.

It is an amenable number.

7712532521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7712532521 is an equidigital number, since it uses as much as digits as its factorization.

7712532521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 35.

The square root of 7712532521 is about 87821.0255064241. The cubic root of 7712532521 is about 1975.7515717592.

Adding to 7712532521 its reverse (1252352177), we get a palindrome (8964884698).

The spelling of 7712532521 in words is "seven billion, seven hundred twelve million, five hundred thirty-two thousand, five hundred twenty-one".