71152969 has 4 divisors (see below), whose sum is σ = 71229844. Its totient is φ = 71076096.

The previous prime is 71152957. The next prime is 71152981. The reversal of 71152969 is 96925117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96925117 = 139 ⋅697303.

It is an interprime number because it is at equal distance from previous prime (71152957) and next prime (71152981).

It can be written as a sum of positive squares in 2 ways, for example, as 23377225 + 47775744 = 4835^2 + 6912^2 .

It is a cyclic number.

It is not a de Polignac number, because 71152969 - 2⁵ = 71152937 is a prime.

It is a super-2 number, since 2×71152969² = 10125489995029922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71152069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37032 + ... + 38905.

It is an arithmetic number, because the mean of its divisors is an integer number (17807461).

Almost surely, 2^71152969 is an apocalyptic number.

It is an amenable number.

71152969 is a deficient number, since it is larger than the sum of its proper divisors (76875).

71152969 is an equidigital number, since it uses as much as digits as its factorization.

71152969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76874.

The product of its digits is 34020, while the sum is 40.

The square root of 71152969 is about 8435.2219295049. The cubic root of 71152969 is about 414.3789403867.

The spelling of 71152969 in words is "seventy-one million, one hundred fifty-two thousand, nine hundred sixty-nine".