65071057 has 2 divisors, whose sum is σ = 65071058. Its totient is φ = 65071056.

The previous prime is 65071051. The next prime is 65071073. The reversal of 65071057 is 75017056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50140561 + 14930496 = 7081^2 + 3864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65071057 is a prime.

It is not a weakly prime, because it can be changed into another prime (65071051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32535528 + 32535529.

It is an arithmetic number, because the mean of its divisors is an integer number (32535529).

Almost surely, 2^65071057 is an apocalyptic number.

It is an amenable number.

65071057 is a deficient number, since it is larger than the sum of its proper divisors (1).

65071057 is an equidigital number, since it uses as much as digits as its factorization.

65071057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 65071057 is about 8066.6633126715. The cubic root of 65071057 is about 402.2190356874.

The spelling of 65071057 in words is "sixty-five million, seventy-one thousand, fifty-seven".