971573 has 4 divisors (see below), whose sum is σ = 973728. Its totient is φ = 969420.

The previous prime is 971569. The next prime is 971591. The reversal of 971573 is 375179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 375179 = 7 ⋅53597.

It is a cyclic number.

It is not a de Polignac number, because 971573 - 2² = 971569 is a prime.

It is a Duffinian number.

It is a Curzon 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (243432).

2⁹⁷¹⁵⁷³ is an apocalyptic number.

It is an amenable number.

971573 is a deficient number, since it is larger than the sum of its proper divisors (2155).

971573 is a wasteful number, since it uses less digits than its factorization.

971573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its digits is 6615, while the sum is 32.

The square root of 971573 is about 985.6840264507. The cubic root of 971573 is about 99.0433099623.

The spelling of 971573 in words is "nine hundred seventy-one thousand, five hundred seventy-three".