971533 has 4 divisors (see below), whose sum is σ = 1028700. Its totient is φ = 914368.

The previous prime is 971521. The next prime is 971549. The reversal of 971533 is 335179.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 328329 + 643204 = 573^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 971533 - 2⁵ = 971501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971513) 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 3 ways as a sum of consecutive naturals, for example, 28558 + ... + 28591.

It is an arithmetic number, because the mean of its divisors is an integer number (257175).

2⁹⁷¹⁵³³ is an apocalyptic number.

It is an amenable number.

971533 is a deficient number, since it is larger than the sum of its proper divisors (57167).

971533 is a wasteful number, since it uses less digits than its factorization.

971533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57166.

The product of its digits is 2835, while the sum is 28.

The square root of 971533 is about 985.6637357639. The cubic root of 971533 is about 99.0419507277.

The spelling of 971533 in words is "nine hundred seventy-one thousand, five hundred thirty-three".