919325521 has 2 divisors, whose sum is σ = 919325522. Its totient is φ = 919325520.

The previous prime is 919325497. The next prime is 919325531. The reversal of 919325521 is 125523919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 914397121 + 4928400 = 30239^2 + 2220^2 .

It is a cyclic number.

It is not a de Polignac number, because 919325521 - 2⁹ = 919325009 is a prime.

It is not a weakly prime, because it can be changed into another prime (919325531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459662760 + 459662761.

It is an arithmetic number, because the mean of its divisors is an integer number (459662761).

Almost surely, 2^919325521 is an apocalyptic number.

It is an amenable number.

919325521 is a deficient number, since it is larger than the sum of its proper divisors (1).

919325521 is an equidigital number, since it uses as much as digits as its factorization.

919325521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 37.

The square root of 919325521 is about 30320.3812805842. The cubic root of 919325521 is about 972.3510903084.

The spelling of 919325521 in words is "nine hundred nineteen million, three hundred twenty-five thousand, five hundred twenty-one".