163257 has 4 divisors (see below), whose sum is σ = 217680. Its totient is φ = 108836.

The previous prime is 163249. The next prime is 163259. The reversal of 163257 is 752361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752361 = 3 ⋅250787.

It is a cyclic number.

It is not a de Polignac number, because 163257 - 2³ = 163249 is a prime.

It is a D-number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (163259) 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, 27207 + ... + 27212.

It is an arithmetic number, because the mean of its divisors is an integer number (54420).

163257 is a Friedman number, since it can be written as 3*(7*(6^5-2)+1), using all its digits and the basic arithmetic operations.

2¹⁶³²⁵⁷ is an apocalyptic number.

It is an amenable number.

163257 is a deficient number, since it is larger than the sum of its proper divisors (54423).

163257 is an equidigital number, since it uses as much as digits as its factorization.

163257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54422.

The product of its digits is 1260, while the sum is 24.

The square root of 163257 is about 404.0507393880. The cubic root of 163257 is about 54.6542497742.

The spelling of 163257 in words is "one hundred sixty-three thousand, two hundred fifty-seven".