498555921 has 8 divisors (see below), whose sum is σ = 666553984. Its totient is φ = 331464240.

The previous prime is 498555913. The next prime is 498555943. The reversal of 498555921 is 129555894.

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

It is not a de Polignac number, because 498555921 - 2³ = 498555913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498555221) 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, 225310 + ... + 227511.

It is an arithmetic number, because the mean of its divisors is an integer number (83319248).

Almost surely, 2^498555921 is an apocalyptic number.

It is an amenable number.

498555921 is a deficient number, since it is larger than the sum of its proper divisors (167998063).

498555921 is a wasteful number, since it uses less digits than its factorization.

498555921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453191.

The product of its digits is 648000, while the sum is 48.

The square root of 498555921 is about 22328.3658380993. The cubic root of 498555921 is about 792.9356783360.

It can be divided in two parts, 4985 and 55921, that added together give a palindrome (60906).

The spelling of 498555921 in words is "four hundred ninety-eight million, five hundred fifty-five thousand, nine hundred twenty-one".