257987058 has 96 divisors (see below), whose sum is σ = 620524800. Its totient is φ = 71267616.

The previous prime is 257987039. The next prime is 257987069. The reversal of 257987058 is 850789752.

257987058 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 257987058.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1855953 + ... + 1856091.

It is an arithmetic number, because the mean of its divisors is an integer number (6463800).

Almost surely, 2^257987058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 257987058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310262400).

257987058 is an abundant number, since it is smaller than the sum of its proper divisors (362537742).

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

257987058 is a wasteful number, since it uses less digits than its factorization.

257987058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The square root of 257987058 is about 16061.9755322937. The cubic root of 257987058 is about 636.5990311577.

The spelling of 257987058 in words is "two hundred fifty-seven million, nine hundred eighty-seven thousand, fifty-eight".