71343253 has 2 divisors, whose sum is σ = 71343254. Its totient is φ = 71343252.

The previous prime is 71343229. The next prime is 71343257. The reversal of 71343253 is 35234317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36024004 + 35319249 = 6002^2 + 5943^2 .

It is an emirp because it is prime and its reverse (35234317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71343253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71343257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35671626 + 35671627.

It is an arithmetic number, because the mean of its divisors is an integer number (35671627).

Almost surely, 2^71343253 is an apocalyptic number.

It is an amenable number.

71343253 is a deficient number, since it is larger than the sum of its proper divisors (1).

71343253 is an equidigital number, since it uses as much as digits as its factorization.

71343253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 28.

The square root of 71343253 is about 8446.4935328218. The cubic root of 71343253 is about 414.7480020415.

The spelling of 71343253 in words is "seventy-one million, three hundred forty-three thousand, two hundred fifty-three".