531998 has 8 divisors (see below), whose sum is σ = 844992. Its totient is φ = 250336.

The previous prime is 531997. The next prime is 532001. The reversal of 531998 is 899135.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531997) 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, 7790 + ... + 7857.

It is an arithmetic number, because the mean of its divisors is an integer number (105624).

2⁵³¹⁹⁹⁸ is an apocalyptic number.

531998 is a deficient number, since it is larger than the sum of its proper divisors (312994).

531998 is a wasteful number, since it uses less digits than its factorization.

531998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15666.

The product of its digits is 9720, while the sum is 35.

The square root of 531998 is about 729.3819301299. The cubic root of 531998 is about 81.0282886510.

The spelling of 531998 in words is "five hundred thirty-one thousand, nine hundred ninety-eight".