144522521 has 24 divisors (see below), whose sum is σ = 173389440. Its totient is φ = 119639520.

The previous prime is 144522517. The next prime is 144522523. The reversal of 144522521 is 125225441.

144522521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144522521 - 2² = 144522517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144522523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123686 + ... + 124848.

It is an arithmetic number, because the mean of its divisors is an integer number (7224560).

Almost surely, 2^144522521 is an apocalyptic number.

144522521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144522521 is a deficient number, since it is larger than the sum of its proper divisors (28866919).

144522521 is a wasteful number, since it uses less digits than its factorization.

144522521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1266 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 144522521 is about 12021.7519937819. The cubic root of 144522521 is about 524.7814915320.

Adding to 144522521 its reverse (125225441), we get a palindrome (269747962).

The spelling of 144522521 in words is "one hundred forty-four million, five hundred twenty-two thousand, five hundred twenty-one".