215252 has 6 divisors (see below), whose sum is σ = 376698. Its totient is φ = 107624.

The previous prime is 215249. The next prime is 215261. The reversal of 215252 is 252512.

It can be written as a sum of positive squares in only one way, i.e., 188356 + 26896 = 434^2 + 164^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26903 + ... + 26910.

It is an arithmetic number, because the mean of its divisors is an integer number (62783).

2²¹⁵²⁵² is an apocalyptic number.

It is an amenable number.

215252 is a deficient number, since it is larger than the sum of its proper divisors (161446).

215252 is a wasteful number, since it uses less digits than its factorization.

215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53817 (or 53815 counting only the distinct ones).

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

The square root of 215252 is about 463.9525837842. The cubic root of 215252 is about 59.9306606392.

Adding to 215252 its reverse (252512), we get a palindrome (467764).

The spelling of 215252 in words is "two hundred fifteen thousand, two hundred fifty-two".