257054635 has 8 divisors (see below), whose sum is σ = 318416256. Its totient is φ = 199009920.

The previous prime is 257054621. The next prime is 257054639. The reversal of 257054635 is 536450752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 257054635 - 2⁹ = 257054123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257054594 and 257054603.

It is not an unprimeable number, because it can be changed into a prime (257054639) 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 7 ways as a sum of consecutive naturals, for example, 829054 + ... + 829363.

It is an arithmetic number, because the mean of its divisors is an integer number (39802032).

Almost surely, 2^257054635 is an apocalyptic number.

257054635 is a deficient number, since it is larger than the sum of its proper divisors (61361621).

257054635 is a wasteful number, since it uses less digits than its factorization.

257054635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658453.

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 257054635 is about 16032.9234701598. The cubic root of 257054635 is about 635.8311681853.

The spelling of 257054635 in words is "two hundred fifty-seven million, fifty-four thousand, six hundred thirty-five".