493371257 has 2 divisors, whose sum is σ = 493371258. Its totient is φ = 493371256.

The previous prime is 493371247. The next prime is 493371289. The reversal of 493371257 is 752173394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418652521 + 74718736 = 20461^2 + 8644^2 .

It is a cyclic number.

It is not a de Polignac number, because 493371257 - 2⁸ = 493371001 is a prime.

It is not a weakly prime, because it can be changed into another prime (493371227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246685628 + 246685629.

It is an arithmetic number, because the mean of its divisors is an integer number (246685629).

Almost surely, 2^493371257 is an apocalyptic number.

It is an amenable number.

493371257 is a deficient number, since it is larger than the sum of its proper divisors (1).

493371257 is an equidigital number, since it uses as much as digits as its factorization.

493371257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 493371257 is about 22211.9620249991. The cubic root of 493371257 is about 790.1774194266.

The spelling of 493371257 in words is "four hundred ninety-three million, three hundred seventy-one thousand, two hundred fifty-seven".