53257 has 4 divisors (see below), whose sum is σ = 56080. Its totient is φ = 50436.

The previous prime is 53239. The next prime is 53267. The reversal of 53257 is 75235.

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.

It is a cyclic number.

It is not a de Polignac number, because 53257 - 2⁷ = 53129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (14020).

2⁵³²⁵⁷ is an apocalyptic number.

It is an amenable number.

53257 is a deficient number, since it is larger than the sum of its proper divisors (2823).

53257 is a wasteful number, since it uses less digits than its factorization.

53257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822.

The product of its digits is 1050, while the sum is 22.

The square root of 53257 is about 230.7747819845. The cubic root of 53257 is about 37.6234744767.

Subtracting from 53257 its sum of digits (22), we obtain a palindrome (53235).

The spelling of 53257 in words is "fifty-three thousand, two hundred fifty-seven".