257305054 has 16 divisors (see below), whose sum is σ = 391849920. Its totient is φ = 126696960.

The previous prime is 257305003. The next prime is 257305079. The reversal of 257305054 is 450503752.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66534 + ... + 70294.

It is an arithmetic number, because the mean of its divisors is an integer number (24490620).

Almost surely, 2^257305054 is an apocalyptic number.

257305054 is a deficient number, since it is larger than the sum of its proper divisors (134544866).

257305054 is a wasteful number, since it uses less digits than its factorization.

257305054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 257305054 is about 16040.7310930643. The cubic root of 257305054 is about 636.0375737595.

The spelling of 257305054 in words is "two hundred fifty-seven million, three hundred five thousand, fifty-four".