257993044 has 6 divisors (see below), whose sum is σ = 451487834. Its totient is φ = 128996520.

The previous prime is 257993041. The next prime is 257993063. The reversal of 257993044 is 440399752.

It can be written as a sum of positive squares in only one way, i.e., 137827600 + 120165444 = 11740^2 + 10962^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257993041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32249127 + ... + 32249134.

Almost surely, 2^257993044 is an apocalyptic number.

It is an amenable number.

257993044 is a deficient number, since it is larger than the sum of its proper divisors (193494790).

257993044 is a wasteful number, since it uses less digits than its factorization.

257993044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64498265 (or 64498263 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 257993044 is about 16062.1618719275. The cubic root of 257993044 is about 636.6039547281.

The spelling of 257993044 in words is "two hundred fifty-seven million, nine hundred ninety-three thousand, forty-four".