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99999563 is a prime number
BaseRepresentation
bin1011111010111…
…01111101001011
320222011111121112
411331131331023
5201044441223
613531200535
72322660626
oct575357513
9228144545
1099999563
11514a1174
12295a614b
1317943551
14d3d0dbd
158ba4778
hex5f5df4b

99999563 has 2 divisors, whose sum is σ = 99999564. Its totient is φ = 99999562.

The previous prime is 99999551. The next prime is 99999587. The reversal of 99999563 is 36599999.

It is a weak prime.

It is an emirp because it is prime and its reverse (36599999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99999563 - 24 = 99999547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99995563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999781 + 49999782.

It is an arithmetic number, because the mean of its divisors is an integer number (49999782).

Almost surely, 299999563 is an apocalyptic number.

99999563 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999563 is an equidigital number, since it uses as much as digits as its factorization.

99999563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5314410, while the sum is 59.

The square root of 99999563 is about 9999.9781499761. The cubic root of 99999563 is about 464.1582072355.

The spelling of 99999563 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred sixty-three".