155144 has 32 divisors (see below), whose sum is σ = 332640. Its totient is φ = 67200.

The previous prime is 155137. The next prime is 155153. The reversal of 155144 is 441551.

155144 = T₈₀ + T₈₁ + ... + T₁₁₂.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3587 + ... + 3629.

It is an arithmetic number, because the mean of its divisors is an integer number (10395).

2¹⁵⁵¹⁴⁴ 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 155144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166320).

155144 is an abundant number, since it is smaller than the sum of its proper divisors (177496).

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

155144 is a wasteful number, since it uses less digits than its factorization.

155144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 97 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 155144 is about 393.8832314278. The cubic root of 155144 is about 53.7334832972.

Adding to 155144 its reverse (441551), we get a palindrome (596695).

The spelling of 155144 in words is "one hundred fifty-five thousand, one hundred forty-four".