57228173 has 2 divisors, whose sum is σ = 57228174. Its totient is φ = 57228172.

The previous prime is 57228151. The next prime is 57228253. The reversal of 57228173 is 37182275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55160329 + 2067844 = 7427^2 + 1438^2 .

It is a cyclic number.

It is not a de Polignac number, because 57228173 - 2¹² = 57224077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57228373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28614086 + 28614087.

It is an arithmetic number, because the mean of its divisors is an integer number (28614087).

Almost surely, 2^57228173 is an apocalyptic number.

It is an amenable number.

57228173 is a deficient number, since it is larger than the sum of its proper divisors (1).

57228173 is an equidigital number, since it uses as much as digits as its factorization.

57228173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The square root of 57228173 is about 7564.9304689468. The cubic root of 57228173 is about 385.3629522663.

The spelling of 57228173 in words is "fifty-seven million, two hundred twenty-eight thousand, one hundred seventy-three".