144254521 has 4 divisors (see below), whose sum is σ = 144365044. Its totient is φ = 144144000.

The previous prime is 144254477. The next prime is 144254531. The reversal of 144254521 is 125452441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128572921 + 15681600 = 11339^2 + 3960^2 .

It is a cyclic number.

It is not a de Polignac number, because 144254521 - 2¹⁹ = 143730233 is a prime.

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 144254521.

It is not an unprimeable number, because it can be changed into a prime (144254531) 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, 53280 + ... + 55921.

It is an arithmetic number, because the mean of its divisors is an integer number (36091261).

Almost surely, 2^144254521 is an apocalyptic number.

It is an amenable number.

144254521 is a deficient number, since it is larger than the sum of its proper divisors (110523).

144254521 is a wasteful number, since it uses less digits than its factorization.

144254521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110522.

The product of its digits is 6400, while the sum is 28.

The square root of 144254521 is about 12010.6003596823. The cubic root of 144254521 is about 524.4569089854.

The spelling of 144254521 in words is "one hundred forty-four million, two hundred fifty-four thousand, five hundred twenty-one".