71457853 has 2 divisors, whose sum is σ = 71457854. Its totient is φ = 71457852.

The previous prime is 71457839. The next prime is 71457857. The reversal of 71457853 is 35875417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44863204 + 26594649 = 6698^2 + 5157^2 .

It is an emirp because it is prime and its reverse (35875417) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71457853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71457857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35728926 + 35728927.

It is an arithmetic number, because the mean of its divisors is an integer number (35728927).

Almost surely, 2^71457853 is an apocalyptic number.

It is an amenable number.

71457853 is a deficient number, since it is larger than the sum of its proper divisors (1).

71457853 is an equidigital number, since it uses as much as digits as its factorization.

71457853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 71457853 is about 8453.2746909112. The cubic root of 71457853 is about 414.9699557289.

The spelling of 71457853 in words is "seventy-one million, four hundred fifty-seven thousand, eight hundred fifty-three".