971973573 has 12 divisors (see below), whose sum is σ = 1317573504. Its totient is φ = 637352400.

The previous prime is 971973553. The next prime is 971973581. The reversal of 971973573 is 375379179.

It is not a de Polignac number, because 971973573 - 2⁹ = 971973061 is a prime.

It is a super-2 number, since 2×971973573² = 1889465253220772658, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971973503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32373 + ... + 54698.

It is an arithmetic number, because the mean of its divisors is an integer number (109797792).

Almost surely, 2^971973573 is an apocalyptic number.

It is an amenable number.

971973573 is a deficient number, since it is larger than the sum of its proper divisors (345599931).

971973573 is an equidigital number, since it uses as much as digits as its factorization.

971973573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87196 (or 87135 counting only the distinct ones).

The product of its digits is 1250235, while the sum is 51.

The square root of 971973573 is about 31176.4907101489. The cubic root of 971973573 is about 990.5691972175.

The spelling of 971973573 in words is "nine hundred seventy-one million, nine hundred seventy-three thousand, five hundred seventy-three".