145551144 has 96 divisors (see below), whose sum is σ = 395781120. Its totient is φ = 44448768.

The previous prime is 145551121. The next prime is 145551149. The reversal of 145551144 is 441155541.

145551144 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145551149) 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, 1146009 + ... + 1146135.

It is an arithmetic number, because the mean of its divisors is an integer number (4122720).

Almost surely, 2^145551144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145551144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197890560).

145551144 is an abundant number, since it is smaller than the sum of its proper divisors (250229976).

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

145551144 is a wasteful number, since it uses less digits than its factorization.

145551144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 202 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 145551144 is about 12064.4578825573. The cubic root of 145551144 is about 526.0235740518.

The spelling of 145551144 in words is "one hundred forty-five million, five hundred fifty-one thousand, one hundred forty-four".