144857 has 4 divisors (see below), whose sum is σ = 153396. Its totient is φ = 136320.

The previous prime is 144847. The next prime is 144883. The reversal of 144857 is 758441.

144857 is nontrivially palindromic in base 15.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 52441 = 304^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 144857 - 2¹⁰ = 143833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144817) 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, 4244 + ... + 4277.

It is an arithmetic number, because the mean of its divisors is an integer number (38349).

2¹⁴⁴⁸⁵⁷ is an apocalyptic number.

144857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

144857 is a deficient number, since it is larger than the sum of its proper divisors (8539).

144857 is an equidigital number, since it uses as much as digits as its factorization.

144857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8538.

The product of its digits is 4480, while the sum is 29.

The square root of 144857 is about 380.6008407768. The cubic root of 144857 is about 52.5186026291.

It can be divided in two parts, 144 and 857, that added together give a palindrome (1001).

The spelling of 144857 in words is "one hundred forty-four thousand, eight hundred fifty-seven".