71252897 has 2 divisors, whose sum is σ = 71252898. Its totient is φ = 71252896.

The previous prime is 71252879. The next prime is 71252903. The reversal of 71252897 is 79825217.

Together with previous prime (71252879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70627216 + 625681 = 8404^2 + 791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71252897 is a prime.

It is not a weakly prime, because it can be changed into another prime (71252807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35626448 + 35626449.

It is an arithmetic number, because the mean of its divisors is an integer number (35626449).

Almost surely, 2^71252897 is an apocalyptic number.

It is an amenable number.

71252897 is a deficient number, since it is larger than the sum of its proper divisors (1).

71252897 is an equidigital number, since it uses as much as digits as its factorization.

71252897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 71252897 is about 8441.1431097927. The cubic root of 71252897 is about 414.5728357355.

The spelling of 71252897 in words is "seventy-one million, two hundred fifty-two thousand, eight hundred ninety-seven".