71325997 has 4 divisors (see below), whose sum is σ = 71738460. Its totient is φ = 70913536.

The previous prime is 71325983. The next prime is 71326007. The reversal of 71325997 is 79952317.

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 59691076 + 11634921 = 7726^2 + 3411^2 .

It is a cyclic number.

It is not a de Polignac number, because 71325997 - 2¹¹ = 71323949 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 (71325097) 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, 205972 + ... + 206317.

It is an arithmetic number, because the mean of its divisors is an integer number (17934615).

Almost surely, 2^71325997 is an apocalyptic number.

It is an amenable number.

71325997 is a deficient number, since it is larger than the sum of its proper divisors (412463).

71325997 is a wasteful number, since it uses less digits than its factorization.

71325997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412462.

The product of its digits is 119070, while the sum is 43.

The square root of 71325997 is about 8445.4719820742. The cubic root of 71325997 is about 414.7145605769.

The spelling of 71325997 in words is "seventy-one million, three hundred twenty-five thousand, nine hundred ninety-seven".