71527541 has 2 divisors, whose sum is σ = 71527542. Its totient is φ = 71527540.

The previous prime is 71527513. The next prime is 71527553. The reversal of 71527541 is 14572517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 23280625 = 6946^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 71527541 - 2¹⁴ = 71511157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71527498 and 71527507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71527501) 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, 35763770 + 35763771.

It is an arithmetic number, because the mean of its divisors is an integer number (35763771).

Almost surely, 2^71527541 is an apocalyptic number.

It is an amenable number.

71527541 is a deficient number, since it is larger than the sum of its proper divisors (1).

71527541 is an equidigital number, since it uses as much as digits as its factorization.

71527541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 71527541 is about 8457.3956393207. The cubic root of 71527541 is about 415.1048092564.

The spelling of 71527541 in words is "seventy-one million, five hundred twenty-seven thousand, five hundred forty-one".