144808521 has 32 divisors (see below), whose sum is σ = 227985408. Its totient is φ = 80600640.

The previous prime is 144808493. The next prime is 144808537. The reversal of 144808521 is 125808441.

It is not a de Polignac number, because 144808521 - 2¹³ = 144800329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (144808541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96640 + ... + 98126.

It is an arithmetic number, because the mean of its divisors is an integer number (7124544).

Almost surely, 2^144808521 is an apocalyptic number.

144808521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144808521 is a deficient number, since it is larger than the sum of its proper divisors (83176887).

144808521 is a wasteful number, since it uses less digits than its factorization.

144808521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 144808521 is about 12033.6412195146. The cubic root of 144808521 is about 525.1274321047.

The spelling of 144808521 in words is "one hundred forty-four million, eight hundred eight thousand, five hundred twenty-one".