9998553 has 8 divisors (see below), whose sum is σ = 13557600. Its totient is φ = 6552608.

The previous prime is 9998543. The next prime is 9998557. The reversal of 9998553 is 3558999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9998553 - 2¹⁴ = 9982169 is a prime.

It is an Ulam number.

9998553 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9998557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28068 + ... + 28421.

It is an arithmetic number, because the mean of its divisors is an integer number (1694700).

Almost surely, 2^9998553 is an apocalyptic number.

It is an amenable number.

9998553 is a deficient number, since it is larger than the sum of its proper divisors (3559047).

9998553 is a wasteful number, since it uses less digits than its factorization.

9998553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56551.

The product of its digits is 437400, while the sum is 48.

The square root of 9998553 is about 3162.0488611026. The cubic root of 9998553 is about 215.4330769453.

The spelling of 9998553 in words is "nine million, nine hundred ninety-eight thousand, five hundred fifty-three".