144478081 has 8 divisors (see below), whose sum is σ = 161872704. Its totient is φ = 127793520.

The previous prime is 144478069. The next prime is 144478097. The reversal of 144478081 is 180874441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144478081 - 2⁵ = 144478049 is a prime.

It is a super-2 number, since 2×144478081² = 41747831778885122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144478081.

It is not an unprimeable number, because it can be changed into a prime (144478051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177085 + ... + 177898.

It is an arithmetic number, because the mean of its divisors is an integer number (20234088).

Almost surely, 2^144478081 is an apocalyptic number.

144478081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144478081 is a deficient number, since it is larger than the sum of its proper divisors (17394623).

144478081 is a wasteful number, since it uses less digits than its factorization.

144478081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355031.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 144478081 is about 12019.9035353866. The cubic root of 144478081 is about 524.7276967322.

The spelling of 144478081 in words is "one hundred forty-four million, four hundred seventy-eight thousand, eighty-one".