71961275 has 6 divisors (see below), whose sum is σ = 89232012. Its totient is φ = 57569000.

The previous prime is 71961257. The next prime is 71961287. The reversal of 71961275 is 57216917.

It is not a de Polignac number, because 71961275 - 2²² = 67766971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1439201 + ... + 1439250.

It is an arithmetic number, because the mean of its divisors is an integer number (14872002).

Almost surely, 2^71961275 is an apocalyptic number.

71961275 is a deficient number, since it is larger than the sum of its proper divisors (17270737).

71961275 is a wasteful number, since it uses less digits than its factorization.

71961275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878461 (or 2878456 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 71961275 is about 8482.9991748202. Note that the first 3 decimals coincide. The cubic root of 71961275 is about 415.9421667476.

The spelling of 71961275 in words is "seventy-one million, nine hundred sixty-one thousand, two hundred seventy-five".