155204 has 24 divisors (see below), whose sum is σ = 325248. Its totient is φ = 63360.

The previous prime is 155203. The next prime is 155209. The reversal of 155204 is 402551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155201) 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, 524 + ... + 764.

It is an arithmetic number, because the mean of its divisors is an integer number (13552).

2¹⁵⁵²⁰⁴ is an apocalyptic number.

155204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162624).

155204 is an abundant number, since it is smaller than the sum of its proper divisors (170044).

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

155204 is a wasteful number, since it uses less digits than its factorization.

155204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 155204 is about 393.9593887700. The cubic root of 155204 is about 53.7404093218.

Adding to 155204 its reverse (402551), we get a palindrome (557755).

The spelling of 155204 in words is "one hundred fifty-five thousand, two hundred four".