76521349 has 2 divisors, whose sum is σ = 76521350. Its totient is φ = 76521348.

The previous prime is 76521331. The next prime is 76521359. The reversal of 76521349 is 94312567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62964225 + 13557124 = 7935^2 + 3682^2 .

It is an emirp because it is prime and its reverse (94312567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76521349 - 2⁹ = 76520837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76521359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38260674 + 38260675.

It is an arithmetic number, because the mean of its divisors is an integer number (38260675).

Almost surely, 2^76521349 is an apocalyptic number.

It is an amenable number.

76521349 is a deficient number, since it is larger than the sum of its proper divisors (1).

76521349 is an equidigital number, since it uses as much as digits as its factorization.

76521349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 76521349 is about 8747.6481982302. The cubic root of 76521349 is about 424.5487232984.

The spelling of 76521349 in words is "seventy-six million, five hundred twenty-one thousand, three hundred forty-nine".