257029 has 4 divisors (see below), whose sum is σ = 263340. Its totient is φ = 250720.

The previous prime is 257017. The next prime is 257053. The reversal of 257029 is 920752.

257029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 216225 = 202^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 257029 - 2⁷ = 256901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256994 and 257012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3094 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (65835).

2²⁵⁷⁰²⁹ is an apocalyptic number.

It is an amenable number.

257029 is a deficient number, since it is larger than the sum of its proper divisors (6311).

257029 is an equidigital number, since it uses as much as digits as its factorization.

257029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 257029 is about 506.9802757504. The cubic root of 257029 is about 63.5810031208.

The spelling of 257029 in words is "two hundred fifty-seven thousand, twenty-nine".