998555532 has 48 divisors (see below), whose sum is σ = 2514193920. Its totient is φ = 306635328.

The previous prime is 998555531. The next prime is 998555549. The reversal of 998555532 is 235555899.

It is a super-2 number, since 2×998555532² = 1994226300975606048, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (998555531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75469 + ... + 87707.

It is an arithmetic number, because the mean of its divisors is an integer number (52379040).

Almost surely, 2^998555532 is an apocalyptic number.

It is an amenable number.

998555532 is an abundant number, since it is smaller than the sum of its proper divisors (1515638388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998555532 is a wasteful number, since it uses less digits than its factorization.

998555532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12782 (or 12780 counting only the distinct ones).

The product of its digits is 2430000, while the sum is 51.

The square root of 998555532 is about 31599.9293037184. The cubic root of 998555532 is about 999.5182786485.

The spelling of 998555532 in words is "nine hundred ninety-eight million, five hundred fifty-five thousand, five hundred thirty-two".