978571 has 8 divisors (see below), whose sum is σ = 1130544. Its totient is φ = 837120.

The previous prime is 978569. The next prime is 978599. The reversal of 978571 is 175879.

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

It is a cyclic number.

It is not a de Polignac number, because 978571 - 2¹ = 978569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978571.

It is not an unprimeable number, because it can be changed into a prime (978511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430 + ... + 2803.

It is an arithmetic number, because the mean of its divisors is an integer number (141318).

2⁹⁷⁸⁵⁷¹ is an apocalyptic number.

978571 is a deficient number, since it is larger than the sum of its proper divisors (151973).

978571 is a wasteful number, since it uses less digits than its factorization.

978571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261.

The product of its digits is 17640, while the sum is 37.

The square root of 978571 is about 989.2274763673. The cubic root of 978571 is about 99.2805361312.

It can be divided in two parts, 97 and 8571, that added together give a palindrome (8668).

The spelling of 978571 in words is "nine hundred seventy-eight thousand, five hundred seventy-one".