76536521 has 2 divisors, whose sum is σ = 76536522. Its totient is φ = 76536520.

The previous prime is 76536469. The next prime is 76536527. The reversal of 76536521 is 12563567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52722121 + 23814400 = 7261^2 + 4880^2 .

It is an emirp because it is prime and its reverse (12563567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76536521 - 2⁶ = 76536457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76536527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38268260 + 38268261.

It is an arithmetic number, because the mean of its divisors is an integer number (38268261).

Almost surely, 2^76536521 is an apocalyptic number.

It is an amenable number.

76536521 is a deficient number, since it is larger than the sum of its proper divisors (1).

76536521 is an equidigital number, since it uses as much as digits as its factorization.

76536521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 76536521 is about 8748.5153597625. The cubic root of 76536521 is about 424.5767800767.

The spelling of 76536521 in words is "seventy-six million, five hundred thirty-six thousand, five hundred twenty-one".