257287083 has 8 divisors (see below), whose sum is σ = 343469568. Its totient is φ = 171314664.

The previous prime is 257287067. The next prime is 257287087. The reversal of 257287083 is 380782752.

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

It is not a de Polignac number, because 257287083 - 2⁴ = 257287067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257287087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49635 + ... + 54572.

It is an arithmetic number, because the mean of its divisors is an integer number (42933696).

Almost surely, 2^257287083 is an apocalyptic number.

257287083 is a deficient number, since it is larger than the sum of its proper divisors (86182485).

257287083 is a wasteful number, since it uses less digits than its factorization.

257287083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105033.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 257287083 is about 16040.1709155483. The cubic root of 257287083 is about 636.0227657885.

The spelling of 257287083 in words is "two hundred fifty-seven million, two hundred eighty-seven thousand, eighty-three".