215452 has 12 divisors (see below), whose sum is σ = 383656. Its totient is φ = 105840.

The previous prime is 215447. The next prime is 215459. The reversal of 215452 is 254512.

215452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215459) by changing a digit.

215452 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198 + ... + 685.

2²¹⁵⁴⁵² is an apocalyptic number.

It is an amenable number.

215452 is a deficient number, since it is larger than the sum of its proper divisors (168204).

215452 is a wasteful number, since it uses less digits than its factorization.

215452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 946 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 215452 is about 464.1680730080. The cubic root of 215452 is about 59.9492162883.

Adding to 215452 its reverse (254512), we get a palindrome (469964).

Subtracting 215452 from its reverse (254512), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 215452 in words is "two hundred fifteen thousand, four hundred fifty-two".