71249357 has 2 divisors, whose sum is σ = 71249358. Its totient is φ = 71249356.

The previous prime is 71249351. The next prime is 71249369. The reversal of 71249357 is 75394217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 8934121 = 7894^2 + 2989^2 .

It is an emirp because it is prime and its reverse (75394217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71249357 - 2²⁴ = 54472141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71249357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71249351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35624678 + 35624679.

It is an arithmetic number, because the mean of its divisors is an integer number (35624679).

Almost surely, 2^71249357 is an apocalyptic number.

It is an amenable number.

71249357 is a deficient number, since it is larger than the sum of its proper divisors (1).

71249357 is an equidigital number, since it uses as much as digits as its factorization.

71249357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 71249357 is about 8440.9334199483. The cubic root of 71249357 is about 414.5659699930.

The spelling of 71249357 in words is "seventy-one million, two hundred forty-nine thousand, three hundred fifty-seven".