972547 has 4 divisors (see below), whose sum is σ = 976336. Its totient is φ = 968760.

The previous prime is 972533. The next prime is 972557. The reversal of 972547 is 745279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972547 is a prime.

It is a super-3 number, since 3×972547³ = 2759643933603333969, which contains 333 as substring.

It is a Duffinian number.

972547 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (972557) 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, 1479 + ... + 2032.

It is an arithmetic number, because the mean of its divisors is an integer number (244084).

2⁹⁷²⁵⁴⁷ is an apocalyptic number.

972547 is a deficient number, since it is larger than the sum of its proper divisors (3789).

972547 is a wasteful number, since it uses less digits than its factorization.

972547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788.

The product of its digits is 17640, while the sum is 34.

The square root of 972547 is about 986.1779758238. The cubic root of 972547 is about 99.0763958156.

The spelling of 972547 in words is "nine hundred seventy-two thousand, five hundred forty-seven".