257852086 has 4 divisors (see below), whose sum is σ = 386778132. Its totient is φ = 128926042.

The previous prime is 257852083. The next prime is 257852143. The reversal of 257852086 is 680258752.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257852083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64463020 + ... + 64463023.

It is an arithmetic number, because the mean of its divisors is an integer number (96694533).

Almost surely, 2^257852086 is an apocalyptic number.

257852086 is a deficient number, since it is larger than the sum of its proper divisors (128926046).

257852086 is a wasteful number, since it uses less digits than its factorization.

257852086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128926045.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 257852086 is about 16057.7733823840. The cubic root of 257852086 is about 636.4879945374.

The spelling of 257852086 in words is "two hundred fifty-seven million, eight hundred fifty-two thousand, eighty-six".