71523041 has 2 divisors, whose sum is σ = 71523042. Its totient is φ = 71523040.

The previous prime is 71523007. The next prime is 71523043. The reversal of 71523041 is 14032517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70492816 + 1030225 = 8396^2 + 1015^2 .

It is an emirp because it is prime and its reverse (14032517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71523041 - 2⁶ = 71522977 is a prime.

It is a Sophie Germain prime.

Together with 71523043, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71522998 and 71523016.

It is not a weakly prime, because it can be changed into another prime (71523043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35761520 + 35761521.

It is an arithmetic number, because the mean of its divisors is an integer number (35761521).

Almost surely, 2^71523041 is an apocalyptic number.

It is an amenable number.

71523041 is a deficient number, since it is larger than the sum of its proper divisors (1).

71523041 is an equidigital number, since it uses as much as digits as its factorization.

71523041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 71523041 is about 8457.1295957908. The cubic root of 71523041 is about 415.0961039345.

Adding to 71523041 its reverse (14032517), we get a palindrome (85555558).

The spelling of 71523041 in words is "seventy-one million, five hundred twenty-three thousand, forty-one".