71125601 has 2 divisors, whose sum is σ = 71125602. Its totient is φ = 71125600.

The previous prime is 71125543. The next prime is 71125651. The reversal of 71125601 is 10652117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64240225 + 6885376 = 8015^2 + 2624^2 .

It is a cyclic number.

It is not a de Polignac number, because 71125601 - 2¹⁰ = 71124577 is a prime.

It is a super-2 number, since 2×71125601² = 10117702235222402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71125651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35562800 + 35562801.

It is an arithmetic number, because the mean of its divisors is an integer number (35562801).

Almost surely, 2^71125601 is an apocalyptic number.

It is an amenable number.

71125601 is a deficient number, since it is larger than the sum of its proper divisors (1).

71125601 is an equidigital number, since it uses as much as digits as its factorization.

71125601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 71125601 is about 8433.5995280782. The cubic root of 71125601 is about 414.3258052080.

Adding to 71125601 its reverse (10652117), we get a palindrome (81777718).

The spelling of 71125601 in words is "seventy-one million, one hundred twenty-five thousand, six hundred one".