257287053 has 8 divisors (see below), whose sum is σ = 343450368. Its totient is φ = 171324224.

The previous prime is 257287033. The next prime is 257287057. The reversal of 257287053 is 350782752.

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

It is a cyclic number.

It is not a de Polignac number, because 257287053 - 2⁶ = 257286989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257287057) 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, 47100 + ... + 52277.

It is an arithmetic number, because the mean of its divisors is an integer number (42931296).

Almost surely, 2^257287053 is an apocalyptic number.

It is an amenable number.

257287053 is a deficient number, since it is larger than the sum of its proper divisors (86163315).

257287053 is an equidigital number, since it uses as much as digits as its factorization.

257287053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100243.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 257287053 is about 16040.1699803961. The cubic root of 257287053 is about 636.0227410681.

The spelling of 257287053 in words is "two hundred fifty-seven million, two hundred eighty-seven thousand, fifty-three".