155388 has 24 divisors (see below), whose sum is σ = 379008. Its totient is φ = 49456.

The previous prime is 155387. The next prime is 155399. The reversal of 155388 is 883551.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155388.

It is not an unprimeable number, because it can be changed into a prime (155381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (15792).

2¹⁵⁵³⁸⁸ 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 155388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189504).

155388 is an abundant number, since it is smaller than the sum of its proper divisors (223620).

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

155388 is a wasteful number, since it uses less digits than its factorization.

155388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 155388 is about 394.1928462060. The cubic root of 155388 is about 53.7616380064.

The spelling of 155388 in words is "one hundred fifty-five thousand, three hundred eighty-eight".