99810559 has 2 divisors, whose sum is σ = 99810560. Its totient is φ = 99810558.

The previous prime is 99810551. The next prime is 99810583. The reversal of 99810559 is 95501899.

It is a weak prime.

It is an emirp because it is prime and its reverse (95501899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99810559 - 2³ = 99810551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99810551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49905279 + 49905280.

It is an arithmetic number, because the mean of its divisors is an integer number (49905280).

Almost surely, 2^99810559 is an apocalyptic number.

99810559 is a deficient number, since it is larger than the sum of its proper divisors (1).

99810559 is an equidigital number, since it uses as much as digits as its factorization.

99810559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 46.

The square root of 99810559 is about 9990.5234597593. The cubic root of 99810559 is about 463.8655956708.

The spelling of 99810559 in words is "ninety-nine million, eight hundred ten thousand, five hundred fifty-nine".