257261041 has 4 divisors (see below), whose sum is σ = 257460084. Its totient is φ = 257062000.

The previous prime is 257261029. The next prime is 257261047. The reversal of 257261041 is 140162752.

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 9859600 + 247401441 = 3140^2 + 15729^2 .

It is a cyclic number.

It is not a de Polignac number, because 257261041 - 2¹⁵ = 257228273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257261047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97570 + ... + 100171.

It is an arithmetic number, because the mean of its divisors is an integer number (64365021).

Almost surely, 2^257261041 is an apocalyptic number.

It is an amenable number.

257261041 is a deficient number, since it is larger than the sum of its proper divisors (199043).

257261041 is a wasteful number, since it uses less digits than its factorization.

257261041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199042.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 257261041 is about 16039.3591206133. The cubic root of 257261041 is about 636.0013061495.

The spelling of 257261041 in words is "two hundred fifty-seven million, two hundred sixty-one thousand, forty-one".