71286151 has 4 divisors (see below), whose sum is σ = 75479472. Its totient is φ = 67092832.

The previous prime is 71286133. The next prime is 71286199. The reversal of 71286151 is 15168217.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71286151 - 2²⁵ = 37731719 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71281151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096635 + ... + 2096668.

It is an arithmetic number, because the mean of its divisors is an integer number (18869868).

Almost surely, 2^71286151 is an apocalyptic number.

71286151 is a deficient number, since it is larger than the sum of its proper divisors (4193321).

71286151 is a wasteful number, since it uses less digits than its factorization.

71286151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193320.

The product of its digits is 3360, while the sum is 31.

The square root of 71286151 is about 8443.1126369367. The cubic root of 71286151 is about 414.6373199484.

The spelling of 71286151 in words is "seventy-one million, two hundred eighty-six thousand, one hundred fifty-one".