71250037 has 2 divisors, whose sum is σ = 71250038. Its totient is φ = 71250036.

The previous prime is 71250031. The next prime is 71250041. The reversal of 71250037 is 73005217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70711281 + 538756 = 8409^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 71250037 - 2³ = 71250029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71249993 and 71250020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71250031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35625018 + 35625019.

It is an arithmetic number, because the mean of its divisors is an integer number (35625019).

Almost surely, 2^71250037 is an apocalyptic number.

It is an amenable number.

71250037 is a deficient number, since it is larger than the sum of its proper divisors (1).

71250037 is an equidigital number, since it uses as much as digits as its factorization.

71250037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 71250037 is about 8440.9736997576. The cubic root of 71250037 is about 414.5672888538.

The spelling of 71250037 in words is "seventy-one million, two hundred fifty thousand, thirty-seven".