71151389 has 2 divisors, whose sum is σ = 71151390. Its totient is φ = 71151388.

The previous prime is 71151383. The next prime is 71151403. The reversal of 71151389 is 98315117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41088100 + 30063289 = 6410^2 + 5483^2 .

It is a cyclic number.

It is not a de Polignac number, because 71151389 - 2⁸ = 71151133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71151383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35575694 + 35575695.

It is an arithmetic number, because the mean of its divisors is an integer number (35575695).

Almost surely, 2^71151389 is an apocalyptic number.

It is an amenable number.

71151389 is a deficient number, since it is larger than the sum of its proper divisors (1).

71151389 is an equidigital number, since it uses as much as digits as its factorization.

71151389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 35.

The square root of 71151389 is about 8435.1282740691. The cubic root of 71151389 is about 414.3758731754.

The spelling of 71151389 in words is "seventy-one million, one hundred fifty-one thousand, three hundred eighty-nine".