144521499 has 4 divisors (see below), whose sum is σ = 192695336. Its totient is φ = 96347664.

The previous prime is 144521491. The next prime is 144521521. The reversal of 144521499 is 994125441.

144521499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994125441 = 3 ⋅331375147.

It is not a de Polignac number, because 144521499 - 2³ = 144521491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144521491) 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, 24086914 + ... + 24086919.

It is an arithmetic number, because the mean of its divisors is an integer number (48173834).

Almost surely, 2^144521499 is an apocalyptic number.

144521499 is a deficient number, since it is larger than the sum of its proper divisors (48173837).

144521499 is an equidigital number, since it uses as much as digits as its factorization.

144521499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48173836.

The product of its digits is 51840, while the sum is 39.

The square root of 144521499 is about 12021.7094874232. The cubic root of 144521499 is about 524.7802545208.

It can be divided in two parts, 14452 and 1499, that added together give a palindrome (15951).

The spelling of 144521499 in words is "one hundred forty-four million, five hundred twenty-one thousand, four hundred ninety-nine".