71432261 has 2 divisors, whose sum is σ = 71432262. Its totient is φ = 71432260.

The previous prime is 71432243. The next prime is 71432279. The reversal of 71432261 is 16223417.

It is a balanced prime because it is at equal distance from previous prime (71432243) and next prime (71432279).

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 10201636 = 7825^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 71432261 - 2⁶ = 71432197 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71432261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71432561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35716130 + 35716131.

It is an arithmetic number, because the mean of its divisors is an integer number (35716131).

Almost surely, 2^71432261 is an apocalyptic number.

It is an amenable number.

71432261 is a deficient number, since it is larger than the sum of its proper divisors (1).

71432261 is an equidigital number, since it uses as much as digits as its factorization.

71432261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 71432261 is about 8451.7608224559. The cubic root of 71432261 is about 414.9204105367.

Adding to 71432261 its reverse (16223417), we get a palindrome (87655678).

The spelling of 71432261 in words is "seventy-one million, four hundred thirty-two thousand, two hundred sixty-one".