71025751 has 2 divisors, whose sum is σ = 71025752. Its totient is φ = 71025750.

The previous prime is 71025733. The next prime is 71025761. The reversal of 71025751 is 15752017.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71025751 is a prime.

It is a super-2 number, since 2×71025751² = 10089314610228002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71025761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35512875 + 35512876.

It is an arithmetic number, because the mean of its divisors is an integer number (35512876).

Almost surely, 2^71025751 is an apocalyptic number.

71025751 is a deficient number, since it is larger than the sum of its proper divisors (1).

71025751 is an equidigital number, since it uses as much as digits as its factorization.

71025751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 71025751 is about 8427.6776753742. The cubic root of 71025751 is about 414.1318300170.

Adding to 71025751 its reverse (15752017), we get a palindrome (86777768).

The spelling of 71025751 in words is "seventy-one million, twenty-five thousand, seven hundred fifty-one".