71971325 has 6 divisors (see below), whose sum is σ = 89244474. Its totient is φ = 57577040.

The previous prime is 71971307. The next prime is 71971331. The reversal of 71971325 is 52317917.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 17255716 + 54715609 = 4154^2 + 7397^2 .

It is not a de Polignac number, because 71971325 - 2⁶ = 71971261 is a prime.

It is a Duffinian number.

It is a congruent 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, 1439402 + ... + 1439451.

It is an arithmetic number, because the mean of its divisors is an integer number (14874079).

Almost surely, 2^71971325 is an apocalyptic number.

It is an amenable number.

71971325 is a deficient number, since it is larger than the sum of its proper divisors (17273149).

71971325 is a wasteful number, since it uses less digits than its factorization.

71971325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878863 (or 2878858 counting only the distinct ones).

The product of its digits is 13230, while the sum is 35.

The square root of 71971325 is about 8483.5915153902. The cubic root of 71971325 is about 415.9615291255.

The spelling of 71971325 in words is "seventy-one million, nine hundred seventy-one thousand, three hundred twenty-five".