9988553 has 2 divisors, whose sum is σ = 9988554. Its totient is φ = 9988552.

The previous prime is 9988519. The next prime is 9988577. The reversal of 9988553 is 3558899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9966649 + 21904 = 3157^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 9988553 - 2²² = 5794249 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9988498 and 9988507.

It is not a weakly prime, because it can be changed into another prime (9988453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994276 + 4994277.

It is an arithmetic number, because the mean of its divisors is an integer number (4994277).

Almost surely, 2^9988553 is an apocalyptic number.

It is an amenable number.

9988553 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988553 is an equidigital number, since it uses as much as digits as its factorization.

9988553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The square root of 9988553 is about 3160.4672122963. The cubic root of 9988553 is about 215.3612315698.

The spelling of 9988553 in words is "nine million, nine hundred eighty-eight thousand, five hundred fifty-three".