71025761 has 2 divisors, whose sum is σ = 71025762. Its totient is φ = 71025760.

The previous prime is 71025751. The next prime is 71025769. The reversal of 71025761 is 16752017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65918161 + 5107600 = 8119^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 71025761 - 2⁶ = 71025697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71025769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35512880 + 35512881.

It is an arithmetic number, because the mean of its divisors is an integer number (35512881).

Almost surely, 2^71025761 is an apocalyptic number.

It is an amenable number.

71025761 is a deficient number, since it is larger than the sum of its proper divisors (1).

71025761 is an equidigital number, since it uses as much as digits as its factorization.

71025761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 71025761 is about 8427.6782686574. The cubic root of 71025761 is about 414.1318494528.

Adding to 71025761 its reverse (16752017), we get a palindrome (87777778).

The spelling of 71025761 in words is "seventy-one million, twenty-five thousand, seven hundred sixty-one".