155655544 has 64 divisors (see below), whose sum is σ = 326954880. Its totient is φ = 68880000.

The previous prime is 155655529. The next prime is 155655551. The reversal of 155655544 is 445556551.

155655544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155655497 and 155655506.

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, 737599 + ... + 737809.

It is an arithmetic number, because the mean of its divisors is an integer number (5108670).

Almost surely, 2^155655544 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 155655544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163477440).

155655544 is an abundant number, since it is smaller than the sum of its proper divisors (171299336).

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

155655544 is a wasteful number, since it uses less digits than its factorization.

155655544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 408 counting only the distinct ones).

The product of its digits is 300000, while the sum is 40.

The square root of 155655544 is about 12476.1991006877. The cubic root of 155655544 is about 537.9247555801.

The spelling of 155655544 in words is "one hundred fifty-five million, six hundred fifty-five thousand, five hundred forty-four".