257354 has 4 divisors (see below), whose sum is σ = 386034. Its totient is φ = 128676.

The previous prime is 257353. The next prime is 257371. The reversal of 257354 is 453752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 180625 + 76729 = 425^2 + 277^2 .

It is not an unprimeable number, because it can be changed into a prime (257351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64337 + ... + 64340.

2²⁵⁷³⁵⁴ is an apocalyptic number.

257354 is a deficient number, since it is larger than the sum of its proper divisors (128680).

257354 is a wasteful number, since it uses less digits than its factorization.

257354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128679.

The product of its digits is 4200, while the sum is 26.

The square root of 257354 is about 507.3006997827. The cubic root of 257354 is about 63.6077901405.

The spelling of 257354 in words is "two hundred fifty-seven thousand, three hundred fifty-four".