57998257 has 2 divisors, whose sum is σ = 57998258. Its totient is φ = 57998256.

The previous prime is 57998221. The next prime is 57998261. The reversal of 57998257 is 75289975.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35331136 + 22667121 = 5944^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 57998257 - 2¹⁵ = 57965489 is a prime.

It is not a weakly prime, because it can be changed into another prime (57998287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28999128 + 28999129.

It is an arithmetic number, because the mean of its divisors is an integer number (28999129).

Almost surely, 2^57998257 is an apocalyptic number.

It is an amenable number.

57998257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57998257 is an equidigital number, since it uses as much as digits as its factorization.

57998257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 52.

The square root of 57998257 is about 7615.6586714479. The cubic root of 57998257 is about 387.0837864734.

The spelling of 57998257 in words is "fifty-seven million, nine hundred ninety-eight thousand, two hundred fifty-seven".