257834653 has 2 divisors, whose sum is σ = 257834654. Its totient is φ = 257834652.

The previous prime is 257834627. The next prime is 257834659. The reversal of 257834653 is 356438752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224910009 + 32924644 = 14997^2 + 5738^2 .

It is a cyclic number.

It is not a de Polignac number, because 257834653 - 2⁹ = 257834141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257834659) 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 as a sum of consecutive naturals, namely, 128917326 + 128917327.

It is an arithmetic number, because the mean of its divisors is an integer number (128917327).

Almost surely, 2^257834653 is an apocalyptic number.

It is an amenable number.

257834653 is a deficient number, since it is larger than the sum of its proper divisors (1).

257834653 is an equidigital number, since it uses as much as digits as its factorization.

257834653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 43.

The square root of 257834653 is about 16057.2305519974. The cubic root of 257834653 is about 636.4736502087.

The spelling of 257834653 in words is "two hundred fifty-seven million, eight hundred thirty-four thousand, six hundred fifty-three".