988553 has 4 divisors (see below), whose sum is σ = 991380. Its totient is φ = 985728.

The previous prime is 988549. The next prime is 988571. The reversal of 988553 is 355889.

988553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355889 = 19 ⋅18731.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 51529 = 968^2 + 227^2 .

It is a cyclic number.

It is not a de Polignac number, because 988553 - 2² = 988549 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (988583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (247845).

2⁹⁸⁸⁵⁵³ is an apocalyptic number.

It is an amenable number.

988553 is a deficient number, since it is larger than the sum of its proper divisors (2827).

988553 is a wasteful number, since it uses less digits than its factorization.

988553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826.

The product of its digits is 43200, while the sum is 38.

The square root of 988553 is about 994.2600263513. The cubic root of 988553 is about 99.6169680720.

The spelling of 988553 in words is "nine hundred eighty-eight thousand, five hundred fifty-three".