215466113 has 4 divisors (see below), whose sum is σ = 215679828. Its totient is φ = 215252400.

The previous prime is 215466071. The next prime is 215466131. The reversal of 215466113 is 311664512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66064384 + 149401729 = 8128^2 + 12223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215466113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215466413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105338 + ... + 107363.

It is an arithmetic number, because the mean of its divisors is an integer number (53919957).

Almost surely, 2^215466113 is an apocalyptic number.

It is an amenable number.

215466113 is a deficient number, since it is larger than the sum of its proper divisors (213715).

215466113 is a wasteful number, since it uses less digits than its factorization.

215466113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213714.

The product of its digits is 4320, while the sum is 29.

The square root of 215466113 is about 14678.7640147255. The cubic root of 215466113 is about 599.5052523386.

The spelling of 215466113 in words is "two hundred fifteen million, four hundred sixty-six thousand, one hundred thirteen".