144434521 has 8 divisors (see below), whose sum is σ = 180074304. Its totient is φ = 112546320.

The previous prime is 144434509. The next prime is 144434551. The reversal of 144434521 is 125434441.

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 144434521 - 2²¹ = 142337369 is a prime.

It is a super-2 number, since 2×144434521² = 41722661712998882, which contains 22 as substring.

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 144434521.

It is not an unprimeable number, because it can be changed into a prime (144434551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937810 + ... + 937963.

It is an arithmetic number, because the mean of its divisors is an integer number (22509288).

Almost surely, 2^144434521 is an apocalyptic number.

144434521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144434521 is a deficient number, since it is larger than the sum of its proper divisors (35639783).

144434521 is a wasteful number, since it uses less digits than its factorization.

144434521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875791.

The product of its digits is 7680, while the sum is 28.

The square root of 144434521 is about 12018.0914042122. The cubic root of 144434521 is about 524.6749564691.

Adding to 144434521 its reverse (125434441), we get a palindrome (269868962).

The spelling of 144434521 in words is "one hundred forty-four million, four hundred thirty-four thousand, five hundred twenty-one".