257547448 has 16 divisors (see below), whose sum is σ = 483078960. Its totient is φ = 128726400.

The previous prime is 257547443. The next prime is 257547457. The reversal of 257547448 is 844745752.

It is a junction number, because it is equal to n+sod(n) for n = 257547398 and 257547407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257547443) 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 in 3 ways as a sum of consecutive naturals, for example, 30133 + ... + 37723.

It is an arithmetic number, because the mean of its divisors is an integer number (30192435).

Almost surely, 2^257547448 is an apocalyptic number.

It is an amenable number.

257547448 is a deficient number, since it is larger than the sum of its proper divisors (225531512).

257547448 is a wasteful number, since it uses less digits than its factorization.

257547448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838 (or 11834 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 46.

The square root of 257547448 is about 16048.2848927853. The cubic root of 257547448 is about 636.2372372875.

The spelling of 257547448 in words is "two hundred fifty-seven million, five hundred forty-seven thousand, four hundred forty-eight".