71851273 has 16 divisors (see below), whose sum is σ = 80543232. Its totient is φ = 63648000.

The previous prime is 71851271. The next prime is 71851277. The reversal of 71851273 is 37215817.

It is not a de Polignac number, because 71851273 - 2¹ = 71851271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71851271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52113 + ... + 53473.

It is an arithmetic number, because the mean of its divisors is an integer number (5033952).

Almost surely, 2^71851273 is an apocalyptic number.

It is an amenable number.

71851273 is a deficient number, since it is larger than the sum of its proper divisors (8691959).

71851273 is a wasteful number, since it uses less digits than its factorization.

71851273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its digits is 11760, while the sum is 34.

The square root of 71851273 is about 8476.5130212842. The cubic root of 71851273 is about 415.7301184207.

The spelling of 71851273 in words is "seventy-one million, eight hundred fifty-one thousand, two hundred seventy-three".