257715483 has 8 divisors (see below), whose sum is σ = 358560768. Its totient is φ = 164340264.

The previous prime is 257715473. The next prime is 257715509. The reversal of 257715483 is 384517752.

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

It is not a de Polignac number, because 257715483 - 2⁴ = 257715467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257715443) 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, 1867435 + ... + 1867572.

It is an arithmetic number, because the mean of its divisors is an integer number (44820096).

Almost surely, 2^257715483 is an apocalyptic number.

257715483 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

257715483 is a deficient number, since it is larger than the sum of its proper divisors (100845285).

257715483 is a wasteful number, since it uses less digits than its factorization.

257715483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735033.

The product of its digits is 235200, while the sum is 42.

The square root of 257715483 is about 16053.5193337785. The cubic root of 257715483 is about 636.3755766919.

The spelling of 257715483 in words is "two hundred fifty-seven million, seven hundred fifteen thousand, four hundred eighty-three".