988555 has 4 divisors (see below), whose sum is σ = 1186272. Its totient is φ = 790840.

The previous prime is 988549. The next prime is 988571. The reversal of 988555 is 555889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555889 = 587 ⋅947.

It is not a de Polignac number, because 988555 - 2¹¹ = 986507 is a prime.

It is a Duffinian number.

988555 is a lucky number.

It is a nialpdrome in base 10.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 98851 + ... + 98860.

It is an arithmetic number, because the mean of its divisors is an integer number (296568).

2⁹⁸⁸⁵⁵⁵ is an apocalyptic number.

988555 is a deficient number, since it is larger than the sum of its proper divisors (197717).

988555 is a wasteful number, since it uses less digits than its factorization.

988555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197716.

The product of its digits is 72000, while the sum is 40.

The square root of 988555 is about 994.2610321239. The cubic root of 988555 is about 99.6170352522.

The spelling of 988555 in words is "nine hundred eighty-eight thousand, five hundred fifty-five".