257057124 has 12 divisors (see below), whose sum is σ = 599799984. Its totient is φ = 85685704.

The previous prime is 257057123. The next prime is 257057161. The reversal of 257057124 is 421750752.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (257057123) 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 in 3 ways as a sum of consecutive naturals, for example, 10710702 + ... + 10710725.

It is an arithmetic number, because the mean of its divisors is an integer number (49983332).

Almost surely, 2^257057124 is an apocalyptic number.

It is an amenable number.

257057124 is an abundant number, since it is smaller than the sum of its proper divisors (342742860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257057124 is a wasteful number, since it uses less digits than its factorization.

257057124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21421434 (or 21421432 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 257057124 is about 16033.0010914987. The cubic root of 257057124 is about 635.8332203802.

The spelling of 257057124 in words is "two hundred fifty-seven million, fifty-seven thousand, one hundred twenty-four".