257082827 has 4 divisors (see below), whose sum is σ = 260337120. Its totient is φ = 253828536.

The previous prime is 257082821. The next prime is 257082841. The reversal of 257082827 is 728280752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257082827 - 2⁴ = 257082811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257082821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627028 + ... + 1627185.

It is an arithmetic number, because the mean of its divisors is an integer number (65084280).

Almost surely, 2^257082827 is an apocalyptic number.

257082827 is a deficient number, since it is larger than the sum of its proper divisors (3254293).

257082827 is an equidigital number, since it uses as much as digits as its factorization.

257082827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254292.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 257082827 is about 16033.8026369293. The cubic root of 257082827 is about 635.8544118782.

The spelling of 257082827 in words is "two hundred fifty-seven million, eighty-two thousand, eight hundred twenty-seven".