257414161 has 4 divisors (see below), whose sum is σ = 258343732. Its totient is φ = 256484592.

The previous prime is 257414149. The next prime is 257414203. The reversal of 257414161 is 161414752.

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 45158400 + 212255761 = 6720^2 + 14569^2 .

It is a cyclic number.

It is not a de Polignac number, because 257414161 - 2⁹ = 257413649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257415161) 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, 464370 + ... + 464923.

It is an arithmetic number, because the mean of its divisors is an integer number (64585933).

Almost surely, 2^257414161 is an apocalyptic number.

It is an amenable number.

257414161 is a deficient number, since it is larger than the sum of its proper divisors (929571).

257414161 is an equidigital number, since it uses as much as digits as its factorization.

257414161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929570.

The product of its digits is 6720, while the sum is 31.

The square root of 257414161 is about 16044.1316686195. The cubic root of 257414161 is about 636.1274623229.

The spelling of 257414161 in words is "two hundred fifty-seven million, four hundred fourteen thousand, one hundred sixty-one".