988521 has 8 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 652752.

The previous prime is 988511. The next prime is 988541. The reversal of 988521 is 125889.

It is a happy number.

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

It is not a de Polignac number, because 988521 - 2⁵ = 988489 is a prime.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988521.

It is not an unprimeable number, because it can be changed into a prime (988501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1185 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2⁹⁸⁸⁵²¹ is an apocalyptic number.

It is an amenable number.

988521 is a deficient number, since it is larger than the sum of its proper divisors (342039).

988521 is a wasteful number, since it uses less digits than its factorization.

988521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 5760, while the sum is 33.

The square root of 988521 is about 994.2439338512. The cubic root of 988521 is about 99.6158931752.

The spelling of 988521 in words is "nine hundred eighty-eight thousand, five hundred twenty-one".