71143573 has 2 divisors, whose sum is σ = 71143574. Its totient is φ = 71143572.

The previous prime is 71143561. The next prime is 71143603. The reversal of 71143573 is 37534117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65658609 + 5484964 = 8103^2 + 2342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71143573 is a prime.

It is a super-2 number, since 2×71143573² = 10122815958412658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71143073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35571786 + 35571787.

It is an arithmetic number, because the mean of its divisors is an integer number (35571787).

Almost surely, 2^71143573 is an apocalyptic number.

It is an amenable number.

71143573 is a deficient number, since it is larger than the sum of its proper divisors (1).

71143573 is an equidigital number, since it uses as much as digits as its factorization.

71143573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 31.

The square root of 71143573 is about 8434.6649607438. The cubic root of 71143573 is about 414.3606995179.

The spelling of 71143573 in words is "seventy-one million, one hundred forty-three thousand, five hundred seventy-three".