155250 has 64 divisors (see below), whose sum is σ = 449280. Its totient is φ = 39600.

The previous prime is 155231. The next prime is 155251. The reversal of 155250 is 52551.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (155251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6739 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (7020).

2¹⁵⁵²⁵⁰ is an apocalyptic number.

155250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224640).

155250 is an abundant number, since it is smaller than the sum of its proper divisors (294030).

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

155250 is a wasteful number, since it uses less digits than its factorization.

155250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 155250 is about 394.0177660969. The cubic root of 155250 is about 53.7457180652.

The spelling of 155250 in words is "one hundred fifty-five thousand, two hundred fifty".