215412255 has 12 divisors (see below), whose sum is σ = 373381320. Its totient is φ = 114886512.

The previous prime is 215412247. The next prime is 215412257. The reversal of 215412255 is 552214512.

It is not a de Polignac number, because 215412255 - 2³ = 215412247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215412257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2393425 + ... + 2393514.

It is an arithmetic number, because the mean of its divisors is an integer number (31115110).

Almost surely, 2^215412255 is an apocalyptic number.

215412255 is a deficient number, since it is larger than the sum of its proper divisors (157969065).

215412255 is a wasteful number, since it uses less digits than its factorization.

215412255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4786950 (or 4786947 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 215412255 is about 14676.9293450640. The cubic root of 215412255 is about 599.4552973146.

Adding to 215412255 its reverse (552214512), we get a palindrome (767626767).

The spelling of 215412255 in words is "two hundred fifteen million, four hundred twelve thousand, two hundred fifty-five".