144253881 has 24 divisors (see below), whose sum is σ = 218326784. Its totient is φ = 91666080.

The previous prime is 144253853. The next prime is 144253927. The reversal of 144253881 is 188352441.

144253881 is a `hidden beast` number, since 1 + 4 + 42 + 538 + 81 = 666.

It is not a de Polignac number, because 144253881 - 2⁶ = 144253817 is a prime.

It is a super-2 number, since 2×144253881² = 41618364367124322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144251881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14835 + ... + 22551.

Almost surely, 2^144253881 is an apocalyptic number.

It is an amenable number.

144253881 is a deficient number, since it is larger than the sum of its proper divisors (74072903).

144253881 is a wasteful number, since it uses less digits than its factorization.

144253881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821 (or 7818 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 144253881 is about 12010.5737165216. The cubic root of 144253881 is about 524.4561333820.

The spelling of 144253881 in words is "one hundred forty-four million, two hundred fifty-three thousand, eight hundred eighty-one".