144053257 has 4 divisors (see below), whose sum is σ = 152526996. Its totient is φ = 135579520.

The previous prime is 144053227. The next prime is 144053263. The reversal of 144053257 is 752350441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752350441 = 1069 ⋅703789.

It can be written as a sum of positive squares in 2 ways, for example, as 86657481 + 57395776 = 9309^2 + 7576^2 .

It is a cyclic number.

It is not a de Polignac number, because 144053257 - 2¹¹ = 144051209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144053227) 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, 4236844 + ... + 4236877.

It is an arithmetic number, because the mean of its divisors is an integer number (38131749).

Almost surely, 2^144053257 is an apocalyptic number.

144053257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

144053257 is a deficient number, since it is larger than the sum of its proper divisors (8473739).

144053257 is an equidigital number, since it uses as much as digits as its factorization.

144053257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8473738.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 144053257 is about 12002.2188365319. The cubic root of 144053257 is about 524.2128879258.

The spelling of 144053257 in words is "one hundred forty-four million, fifty-three thousand, two hundred fifty-seven".