971523 has 18 divisors (see below), whose sum is σ = 1633164. Its totient is φ = 554904.

The previous prime is 971521. The next prime is 971549. The reversal of 971523 is 325179.

971523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 971523 - 2¹ = 971521 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 971523.

It is not an unprimeable number, because it can be changed into a prime (971521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 661 + ... + 1542.

2⁹⁷¹⁵²³ is an apocalyptic number.

971523 is a deficient number, since it is larger than the sum of its proper divisors (661641).

971523 is a wasteful number, since it uses less digits than its factorization.

971523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2213 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 971523 is about 985.6586630269. The cubic root of 971523 is about 99.0416109132.

The spelling of 971523 in words is "nine hundred seventy-one thousand, five hundred twenty-three".