71248897 has 4 divisors (see below), whose sum is σ = 71720896. Its totient is φ = 70776900.

The previous prime is 71248889. The next prime is 71248909. The reversal of 71248897 is 79884217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71248897 - 2³ = 71248889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71248847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235773 + ... + 236074.

It is an arithmetic number, because the mean of its divisors is an integer number (17930224).

Almost surely, 2^71248897 is an apocalyptic number.

It is an amenable number.

71248897 is a deficient number, since it is larger than the sum of its proper divisors (471999).

71248897 is a wasteful number, since it uses less digits than its factorization.

71248897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471998.

The product of its digits is 225792, while the sum is 46.

The square root of 71248897 is about 8440.9061717330. The cubic root of 71248897 is about 414.5650778176.

The spelling of 71248897 in words is "seventy-one million, two hundred forty-eight thousand, eight hundred ninety-seven".