76125521 has 2 divisors, whose sum is σ = 76125522. Its totient is φ = 76125520.

The previous prime is 76125487. The next prime is 76125559. The reversal of 76125521 is 12552167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38130625 + 37994896 = 6175^2 + 6164^2 .

It is an emirp because it is prime and its reverse (12552167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76125521 - 2¹⁰ = 76124497 is a prime.

It is not a weakly prime, because it can be changed into another prime (76125121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38062760 + 38062761.

It is an arithmetic number, because the mean of its divisors is an integer number (38062761).

Almost surely, 2^76125521 is an apocalyptic number.

It is an amenable number.

76125521 is a deficient number, since it is larger than the sum of its proper divisors (1).

76125521 is an equidigital number, since it uses as much as digits as its factorization.

76125521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 76125521 is about 8724.9940401126. The cubic root of 76125521 is about 423.8154252551.

Adding to 76125521 its reverse (12552167), we get a palindrome (88677688).

The spelling of 76125521 in words is "seventy-six million, one hundred twenty-five thousand, five hundred twenty-one".