99542563 has 2 divisors, whose sum is σ = 99542564. Its totient is φ = 99542562.

The previous prime is 99542557. The next prime is 99542591. The reversal of 99542563 is 36524599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99542563 - 2¹⁷ = 99411491 is a prime.

It is not a weakly prime, because it can be changed into another prime (99542593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49771281 + 49771282.

It is an arithmetic number, because the mean of its divisors is an integer number (49771282).

Almost surely, 2^99542563 is an apocalyptic number.

99542563 is a deficient number, since it is larger than the sum of its proper divisors (1).

99542563 is an equidigital number, since it uses as much as digits as its factorization.

99542563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 43.

The square root of 99542563 is about 9977.1019339285. The cubic root of 99542563 is about 463.4500566244.

The spelling of 99542563 in words is "ninety-nine million, five hundred forty-two thousand, five hundred sixty-three".