71286133 has 2 divisors, whose sum is σ = 71286134. Its totient is φ = 71286132.

The previous prime is 71286091. The next prime is 71286199. The reversal of 71286133 is 33168217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 18769 = 8442^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 71286133 - 2²¹ = 69188981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71286095 and 71286104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71286533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35643066 + 35643067.

It is an arithmetic number, because the mean of its divisors is an integer number (35643067).

Almost surely, 2^71286133 is an apocalyptic number.

It is an amenable number.

71286133 is a deficient number, since it is larger than the sum of its proper divisors (1).

71286133 is an equidigital number, since it uses as much as digits as its factorization.

71286133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 71286133 is about 8443.1115709790. Note that the first 3 decimals coincide. The cubic root of 71286133 is about 414.6372850493.

The spelling of 71286133 in words is "seventy-one million, two hundred eighty-six thousand, one hundred thirty-three".