71543453 has 2 divisors, whose sum is σ = 71543454. Its totient is φ = 71543452.

The previous prime is 71543449. The next prime is 71543467. The reversal of 71543453 is 35434517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 1352569 = 8378^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 71543453 - 2² = 71543449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71543473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35771726 + 35771727.

It is an arithmetic number, because the mean of its divisors is an integer number (35771727).

Almost surely, 2^71543453 is an apocalyptic number.

It is an amenable number.

71543453 is a deficient number, since it is larger than the sum of its proper divisors (1).

71543453 is an equidigital number, since it uses as much as digits as its factorization.

71543453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 32.

The square root of 71543453 is about 8458.3363021341. The cubic root of 71543453 is about 415.1355883470.

The spelling of 71543453 in words is "seventy-one million, five hundred forty-three thousand, four hundred fifty-three".