257056111 has 16 divisors (see below), whose sum is σ = 294431200. Its totient is φ = 222455808.

The previous prime is 257056103. The next prime is 257056147. The reversal of 257056111 is 111650752.

It is a cyclic number.

It is not a de Polignac number, because 257056111 - 2³ = 257056103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257056111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257056171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18595 + ... + 29323.

It is an arithmetic number, because the mean of its divisors is an integer number (18401950).

Almost surely, 2^257056111 is an apocalyptic number.

257056111 is a deficient number, since it is larger than the sum of its proper divisors (37375089).

257056111 is a wasteful number, since it uses less digits than its factorization.

257056111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10858.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 257056111 is about 16032.9695003764. The cubic root of 257056111 is about 635.8323851575.

The spelling of 257056111 in words is "two hundred fifty-seven million, fifty-six thousand, one hundred eleven".