144554520 has 128 divisors (see below), whose sum is σ = 484807680. Its totient is φ = 34176000.

The previous prime is 144554513. The next prime is 144554521. The reversal of 144554520 is 25455441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144554521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52785 + ... + 55455.

It is an arithmetic number, because the mean of its divisors is an integer number (3787560).

Almost surely, 2^144554520 is an apocalyptic number.

144554520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144554520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242403840).

144554520 is an abundant number, since it is smaller than the sum of its proper divisors (340253160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144554520 is a wasteful number, since it uses less digits than its factorization.

144554520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2733 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 144554520 is about 12023.0827993489. The cubic root of 144554520 is about 524.8202196224.

The spelling of 144554520 in words is "one hundred forty-four million, five hundred fifty-four thousand, five hundred twenty".