144255247 has 4 divisors (see below), whose sum is σ = 144330120. Its totient is φ = 144180376.

The previous prime is 144255157. The next prime is 144255253. The reversal of 144255247 is 742552441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742552441 = 103 ⋅7209247.

It is a cyclic number.

It is not a de Polignac number, because 144255247 - 2²⁷ = 10037519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144255257) 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, 34468 + ... + 38425.

It is an arithmetic number, because the mean of its divisors is an integer number (36082530).

Almost surely, 2^144255247 is an apocalyptic number.

144255247 is a deficient number, since it is larger than the sum of its proper divisors (74873).

144255247 is an equidigital number, since it uses as much as digits as its factorization.

144255247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74872.

The product of its digits is 44800, while the sum is 34.

The square root of 144255247 is about 12010.6305829461. The cubic root of 144255247 is about 524.4577888078.

The spelling of 144255247 in words is "one hundred forty-four million, two hundred fifty-five thousand, two hundred forty-seven".