981500 has 48 divisors (see below), whose sum is σ = 2323776. Its totient is φ = 360000.

The previous prime is 981493. The next prime is 981517. The reversal of 981500 is 5189.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981500.

It is an unprimeable number.

981500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6425 + ... + 6575.

It is an arithmetic number, because the mean of its divisors is an integer number (48412).

2⁹⁸¹⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161888).

981500 is an abundant number, since it is smaller than the sum of its proper divisors (1342276).

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

981500 is a wasteful number, since it uses less digits than its factorization.

981500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 981500 is about 990.7068183878. The cubic root of 981500 is about 99.3794909828.

Adding to 981500 its reverse (5189), we get a palindrome (986689).

The spelling of 981500 in words is "nine hundred eighty-one thousand, five hundred".