155445144 has 64 divisors (see below), whose sum is σ = 414396000. Its totient is φ = 48420864.

The previous prime is 155445091. The next prime is 155445151. The reversal of 155445144 is 441544551.

155445144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 59514 + ... + 62070.

Almost surely, 2^155445144 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 155445144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207198000).

155445144 is an abundant number, since it is smaller than the sum of its proper divisors (258950856).

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

155445144 is a wasteful number, since it uses less digits than its factorization.

155445144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2728 counting only the distinct ones).

The product of its digits is 32000, while the sum is 33.

The square root of 155445144 is about 12467.7641941128. The cubic root of 155445144 is about 537.6822748672.

Adding to 155445144 its reverse (441544551), we get a palindrome (596989695).

The spelling of 155445144 in words is "one hundred fifty-five million, four hundred forty-five thousand, one hundred forty-four".