215250 has 64 divisors (see below), whose sum is σ = 628992. Its totient is φ = 48000.

The previous prime is 215249. The next prime is 215261. The reversal of 215250 is 52512.

215250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5230 + ... + 5270.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2²¹⁵²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314496).

215250 is an abundant number, since it is smaller than the sum of its proper divisors (413742).

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

215250 is a wasteful number, since it uses less digits than its factorization.

215250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 215250 is about 463.9504283865. The cubic root of 215250 is about 59.9304750246.

Adding to 215250 its reverse (52512), we get a palindrome (267762).

It can be divided in two parts, 215 and 250, that added together give a triangular number (465 = T₃₀).

The spelling of 215250 in words is "two hundred fifteen thousand, two hundred fifty".