201257 has 4 divisors (see below), whose sum is σ = 230016. Its totient is φ = 172500.

The previous prime is 201251. The next prime is 201281. The reversal of 201257 is 752102.

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 201257 - 2⁶ = 201193 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201257.

It is not an unprimeable number, because it can be changed into a prime (201251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14369 + ... + 14382.

It is an arithmetic number, because the mean of its divisors is an integer number (57504).

2²⁰¹²⁵⁷ is an apocalyptic number.

It is an amenable number.

201257 is a deficient number, since it is larger than the sum of its proper divisors (28759).

201257 is an equidigital number, since it uses as much as digits as its factorization.

201257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28758.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 201257 is about 448.6167629503. The cubic root of 201257 is about 58.6026153282.

Adding to 201257 its reverse (752102), we get a palindrome (953359).

The spelling of 201257 in words is "two hundred one thousand, two hundred fifty-seven".