71536541 has 2 divisors, whose sum is σ = 71536542. Its totient is φ = 71536540.

The previous prime is 71536523. The next prime is 71536573. The reversal of 71536541 is 14563517.

It is an a-pointer prime, because the next prime (71536573) can be obtained adding 71536541 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58905625 + 12630916 = 7675^2 + 3554^2 .

It is an emirp because it is prime and its reverse (14563517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71536541 - 2¹⁰ = 71535517 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71536498 and 71536507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71536511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35768270 + 35768271.

It is an arithmetic number, because the mean of its divisors is an integer number (35768271).

Almost surely, 2^71536541 is an apocalyptic number.

It is an amenable number.

71536541 is a deficient number, since it is larger than the sum of its proper divisors (1).

71536541 is an equidigital number, since it uses as much as digits as its factorization.

71536541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 71536541 is about 8457.9277012753. The cubic root of 71536541 is about 415.1222188050.

The spelling of 71536541 in words is "seventy-one million, five hundred thirty-six thousand, five hundred forty-one".