144421554 has 32 divisors (see below), whose sum is σ = 304536960. Its totient is φ = 45568512.

The previous prime is 144421547. The next prime is 144421561. The reversal of 144421554 is 455124441.

144421554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (144421547) and next prime (144421561).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7992 + ... + 18780.

It is an arithmetic number, because the mean of its divisors is an integer number (9516780).

Almost surely, 2^144421554 is an apocalyptic number.

144421554 is an abundant number, since it is smaller than the sum of its proper divisors (160115406).

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

144421554 is a wasteful number, since it uses less digits than its factorization.

144421554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914.

The product of its digits is 12800, while the sum is 30.

The square root of 144421554 is about 12017.5519137635. The cubic root of 144421554 is about 524.6592546278.

Adding to 144421554 its reverse (455124441), we get a palindrome (599545995).

The spelling of 144421554 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred fifty-four".