257345118 has 12 divisors (see below), whose sum is σ = 557581128. Its totient is φ = 85781700.

The previous prime is 257345117. The next prime is 257345129. The reversal of 257345118 is 811543752.

257345118 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257345111) 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 5 ways as a sum of consecutive naturals, for example, 7148458 + ... + 7148493.

It is an arithmetic number, because the mean of its divisors is an integer number (46465094).

Almost surely, 2^257345118 is an apocalyptic number.

257345118 is an abundant number, since it is smaller than the sum of its proper divisors (300236010).

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

257345118 is a wasteful number, since it uses less digits than its factorization.

257345118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14296959 (or 14296956 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 257345118 is about 16041.9798653408. The cubic root of 257345118 is about 636.0705837172.

The spelling of 257345118 in words is "two hundred fifty-seven million, three hundred forty-five thousand, one hundred eighteen".