972543775 has 24 divisors (see below), whose sum is σ = 1389117440. Its totient is φ = 661620960.

The previous prime is 972543773. The next prime is 972543841. The reversal of 972543775 is 577345279.

It is not a de Polignac number, because 972543775 - 2¹ = 972543773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972543773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346 + ... + 44104.

Almost surely, 2^972543775 is an apocalyptic number.

972543775 is a deficient number, since it is larger than the sum of its proper divisors (416573665).

972543775 is a wasteful number, since it uses less digits than its factorization.

972543775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43903 (or 43898 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 49.

The square root of 972543775 is about 31185.6341125205. The cubic root of 972543775 is about 990.7628630190.

The spelling of 972543775 in words is "nine hundred seventy-two million, five hundred forty-three thousand, seven hundred seventy-five".