71293497 has 8 divisors (see below), whose sum is σ = 103699680. Its totient is φ = 43208160.

The previous prime is 71293493. The next prime is 71293507. The reversal of 71293497 is 79439217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71293497 - 2² = 71293493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71293493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080172 + ... + 1080237.

It is an arithmetic number, because the mean of its divisors is an integer number (12962460).

Almost surely, 2^71293497 is an apocalyptic number.

It is an amenable number.

71293497 is a deficient number, since it is larger than the sum of its proper divisors (32406183).

71293497 is a wasteful number, since it uses less digits than its factorization.

71293497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160423.

The product of its digits is 95256, while the sum is 42.

The square root of 71293497 is about 8443.5476548664. The cubic root of 71293497 is about 414.6515621778.

The spelling of 71293497 in words is "seventy-one million, two hundred ninety-three thousand, four hundred ninety-seven".