257278053 has 16 divisors (see below), whose sum is σ = 360691200. Its totient is φ = 162886080.

The previous prime is 257278039. The next prime is 257278067. The reversal of 257278053 is 350872752.

257278053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (257278039) and next prime (257278067).

It is not a de Polignac number, because 257278053 - 2⁴ = 257278037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257278013) 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, 18933 + ... + 29546.

It is an arithmetic number, because the mean of its divisors is an integer number (22543200).

Almost surely, 2^257278053 is an apocalyptic number.

It is an amenable number.

257278053 is a deficient number, since it is larger than the sum of its proper divisors (103413147).

257278053 is a wasteful number, since it uses less digits than its factorization.

257278053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48572.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 257278053 is about 16039.8894322872. The cubic root of 257278053 is about 636.0153248750.

The spelling of 257278053 in words is "two hundred fifty-seven million, two hundred seventy-eight thousand, fifty-three".