972571885 has 4 divisors (see below), whose sum is σ = 1167086268. Its totient is φ = 778057504.

The previous prime is 972571883. The next prime is 972571891. The reversal of 972571885 is 588175279.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 207994084 + 764577801 = 14422^2 + 27651^2 .

It is a cyclic number.

It is not a de Polignac number, because 972571885 - 2¹ = 972571883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972571883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97257184 + ... + 97257193.

It is an arithmetic number, because the mean of its divisors is an integer number (291771567).

Almost surely, 2^972571885 is an apocalyptic number.

It is an amenable number.

972571885 is a deficient number, since it is larger than the sum of its proper divisors (194514383).

972571885 is a wasteful number, since it uses less digits than its factorization.

972571885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194514382.

The product of its digits is 1411200, while the sum is 52.

The square root of 972571885 is about 31186.0847975503. The cubic root of 972571885 is about 990.7724084594.

The spelling of 972571885 in words is "nine hundred seventy-two million, five hundred seventy-one thousand, eight hundred eighty-five".