215055 has 28 divisors (see below), whose sum is σ = 393480. Its totient is φ = 112752.

The previous prime is 215051. The next prime is 215063. The reversal of 215055 is 550512.

It is not a de Polignac number, because 215055 - 2² = 215051 is a prime.

215055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215051) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3616 + ... + 3674.

2²¹⁵⁰⁵⁵ is an apocalyptic number.

215055 is a deficient number, since it is larger than the sum of its proper divisors (178425).

215055 is an frugal number, since it uses more digits than its factorization.

215055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 67 counting only the distinct ones).

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

The square root of 215055 is about 463.7402290076. The cubic root of 215055 is about 59.9123720848.

Adding to 215055 its reverse (550512), we get a palindrome (765567).

The spelling of 215055 in words is "two hundred fifteen thousand, fifty-five".