57211697 has 2 divisors, whose sum is σ = 57211698. Its totient is φ = 57211696.

The previous prime is 57211673. The next prime is 57211733. The reversal of 57211697 is 79611275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 9339136 = 6919^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 57211697 - 2¹⁸ = 56949553 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57211697.

It is not a weakly prime, because it can be changed into another prime (57211607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28605848 + 28605849.

It is an arithmetic number, because the mean of its divisors is an integer number (28605849).

Almost surely, 2^57211697 is an apocalyptic number.

It is an amenable number.

57211697 is a deficient number, since it is larger than the sum of its proper divisors (1).

57211697 is an equidigital number, since it uses as much as digits as its factorization.

57211697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 38.

The square root of 57211697 is about 7563.8414182213. The cubic root of 57211697 is about 385.3259666985.

The spelling of 57211697 in words is "fifty-seven million, two hundred eleven thousand, six hundred ninety-seven".