5257999 has 2 divisors, whose sum is σ = 5258000. Its totient is φ = 5257998.

The previous prime is 5257991. The next prime is 5258023. The reversal of 5257999 is 9997525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5257999 - 2³ = 5257991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5257991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628999 + 2629000.

It is an arithmetic number, because the mean of its divisors is an integer number (2629000).

Almost surely, 2^5257999 is an apocalyptic number.

5257999 is a deficient number, since it is larger than the sum of its proper divisors (1).

5257999 is an equidigital number, since it uses as much as digits as its factorization.

5257999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150, while the sum is 46.

The square root of 5257999 is about 2293.0327080092. The cubic root of 5257999 is about 173.8895564596.

The spelling of 5257999 in words is "five million, two hundred fifty-seven thousand, nine hundred ninety-nine".