71252213 has 2 divisors, whose sum is σ = 71252214. Its totient is φ = 71252212.

The previous prime is 71252201. The next prime is 71252221. The reversal of 71252213 is 31225217.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 574564 = 8407^2 + 758^2 .

It is a cyclic number.

It is not a de Polignac number, because 71252213 - 2¹⁰ = 71251189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71252273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35626106 + 35626107.

It is an arithmetic number, because the mean of its divisors is an integer number (35626107).

Almost surely, 2^71252213 is an apocalyptic number.

It is an amenable number.

71252213 is a deficient number, since it is larger than the sum of its proper divisors (1).

71252213 is an equidigital number, since it uses as much as digits as its factorization.

71252213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 71252213 is about 8441.1025938559. The cubic root of 71252213 is about 414.5715091521.

It can be divided in two parts, 712 and 52213, that added together give a palindrome (52925).

The spelling of 71252213 in words is "seventy-one million, two hundred fifty-two thousand, two hundred thirteen".