57020217073 has 2 divisors, whose sum is σ = 57020217074. Its totient is φ = 57020217072.

The previous prime is 57020217053. The next prime is 57020217091. The reversal of 57020217073 is 37071202075.

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., 56654948529 + 365268544 = 238023^2 + 19112^2 .

It is a cyclic number.

It is not a de Polignac number, because 57020217073 - 2¹³ = 57020208881 is a prime.

It is not a weakly prime, because it can be changed into another prime (57020217053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28510108536 + 28510108537.

It is an arithmetic number, because the mean of its divisors is an integer number (28510108537).

Almost surely, 2^57020217073 is an apocalyptic number.

It is an amenable number.

57020217073 is a deficient number, since it is larger than the sum of its proper divisors (1).

57020217073 is an equidigital number, since it uses as much as digits as its factorization.

57020217073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20580, while the sum is 34.

The spelling of 57020217073 in words is "fifty-seven billion, twenty million, two hundred seventeen thousand, seventy-three".