71535461 has 2 divisors, whose sum is σ = 71535462. Its totient is φ = 71535460.

The previous prime is 71535449. The next prime is 71535469. The reversal of 71535461 is 16453517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 8014561 = 7970^2 + 2831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71535461 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71535469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35767730 + 35767731.

It is an arithmetic number, because the mean of its divisors is an integer number (35767731).

Almost surely, 2^71535461 is an apocalyptic number.

It is an amenable number.

71535461 is a deficient number, since it is larger than the sum of its proper divisors (1).

71535461 is an equidigital number, since it uses as much as digits as its factorization.

71535461 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 71535461 is about 8457.8638556080. The cubic root of 71535461 is about 415.1201297363.

Adding to 71535461 its reverse (16453517), we get a palindrome (87988978).

The spelling of 71535461 in words is "seventy-one million, five hundred thirty-five thousand, four hundred sixty-one".