99520579 has 2 divisors, whose sum is σ = 99520580. Its totient is φ = 99520578.

The previous prime is 99520559. The next prime is 99520583. The reversal of 99520579 is 97502599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99520579 - 2¹⁹ = 98996291 is a prime.

It is not a weakly prime, because it can be changed into another prime (99520529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49760289 + 49760290.

It is an arithmetic number, because the mean of its divisors is an integer number (49760290).

Almost surely, 2^99520579 is an apocalyptic number.

99520579 is a deficient number, since it is larger than the sum of its proper divisors (1).

99520579 is an equidigital number, since it uses as much as digits as its factorization.

99520579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 46.

The square root of 99520579 is about 9976.0001503609. Note that the first 3 decimals coincide. The cubic root of 99520579 is about 463.4159364254.

The spelling of 99520579 in words is "ninety-nine million, five hundred twenty thousand, five hundred seventy-nine".