71250017 has 2 divisors, whose sum is σ = 71250018. Its totient is φ = 71250016.

The previous prime is 71250007. The next prime is 71250029. The reversal of 71250017 is 71005217.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52940176 + 18309841 = 7276^2 + 4279^2 .

It is a cyclic number.

It is not a de Polignac number, because 71250017 - 2⁶ = 71249953 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71249974 and 71250001.

It is not a weakly prime, because it can be changed into another prime (71250007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35625008 + 35625009.

It is an arithmetic number, because the mean of its divisors is an integer number (35625009).

Almost surely, 2^71250017 is an apocalyptic number.

It is an amenable number.

71250017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71250017 is an equidigital number, since it uses as much as digits as its factorization.

71250017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 71250017 is about 8440.9725150601. The cubic root of 71250017 is about 414.5672500639.

The spelling of 71250017 in words is "seventy-one million, two hundred fifty thousand, seventeen".