257543053 has 4 divisors (see below), whose sum is σ = 258285600. Its totient is φ = 256800508.

The previous prime is 257543023. The next prime is 257543087. The reversal of 257543053 is 350345752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257543053 - 2⁹ = 257542541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257543003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370753 + ... + 371446.

It is an arithmetic number, because the mean of its divisors is an integer number (64571400).

Almost surely, 2^257543053 is an apocalyptic number.

It is an amenable number.

257543053 is a deficient number, since it is larger than the sum of its proper divisors (742547).

257543053 is an equidigital number, since it uses as much as digits as its factorization.

257543053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742546.

The product of its (nonzero) digits is 63000, while the sum is 34.

The square root of 257543053 is about 16048.1479616808. The cubic root of 257543053 is about 636.2336181763.

The spelling of 257543053 in words is "two hundred fifty-seven million, five hundred forty-three thousand, fifty-three".