971132569 has 9 divisors (see below), whose sum is σ = 1067820159. Its totient is φ = 882536160.

The previous prime is 971132527. The next prime is 971132587. The reversal of 971132569 is 965231179.

The square root of 971132569 is 31163.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 381225625 + 589906944 = 19525^2 + 24288^2 .

It is not a de Polignac number, because 971132569 - 2²³ = 962743961 is a prime.

It is a super-2 number, since 2×971132569² = 1886196933145079522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971135569) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 341377 + ... + 344209.

Almost surely, 2^971132569 is an apocalyptic number.

971132569 is the 31163-rd square number.

971132569 is the 15582-nd centered octagonal number.

It is an amenable number.

971132569 is a deficient number, since it is larger than the sum of its proper divisors (96687590).

971132569 is an frugal number, since it uses more digits than its factorization.

971132569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688 (or 2844 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The cubic root of 971132569 is about 990.2834167982.

The spelling of 971132569 in words is "nine hundred seventy-one million, one hundred thirty-two thousand, five hundred sixty-nine".