99945563 has 2 divisors, whose sum is σ = 99945564. Its totient is φ = 99945562.

The previous prime is 99945553. The next prime is 99945589. The reversal of 99945563 is 36554999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99945563 is a prime.

It is a super-3 number, since 3×99945563³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99945553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49972781 + 49972782.

It is an arithmetic number, because the mean of its divisors is an integer number (49972782).

Almost surely, 2^99945563 is an apocalyptic number.

99945563 is a deficient number, since it is larger than the sum of its proper divisors (1).

99945563 is an equidigital number, since it uses as much as digits as its factorization.

99945563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 50.

The square root of 99945563 is about 9997.2777794758. The cubic root of 99945563 is about 464.0746433497.

The spelling of 99945563 in words is "ninety-nine million, nine hundred forty-five thousand, five hundred sixty-three".