144115505 has 8 divisors (see below), whose sum is σ = 175308072. Its totient is φ = 113712768.

The previous prime is 144115483. The next prime is 144115523. The reversal of 144115505 is 505511441.

It can be written as a sum of positive squares in 4 ways, for example, as 7529536 + 136585969 = 2744^2 + 11687^2 .

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 144115505 - 2⁶ = 144115441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197054 + ... + 197783.

It is an arithmetic number, because the mean of its divisors is an integer number (21913509).

Almost surely, 2^144115505 is an apocalyptic number.

It is an amenable number.

144115505 is a deficient number, since it is larger than the sum of its proper divisors (31192567).

144115505 is an equidigital number, since it uses as much as digits as its factorization.

144115505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394915.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 144115505 is about 12004.8117436301. The cubic root of 144115505 is about 524.2883843208.

Adding to 144115505 its reverse (505511441), we get a palindrome (649626946).

The spelling of 144115505 in words is "one hundred forty-four million, one hundred fifteen thousand, five hundred five".