215452163 has 4 divisors (see below), whose sum is σ = 217096968. Its totient is φ = 213807360.

The previous prime is 215452157. The next prime is 215452177. The reversal of 215452163 is 361254512.

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

It is a cyclic number.

It is not a de Polignac number, because 215452163 - 2⁶ = 215452099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215452103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822206 + ... + 822467.

It is an arithmetic number, because the mean of its divisors is an integer number (54274242).

Almost surely, 2^215452163 is an apocalyptic number.

215452163 is a deficient number, since it is larger than the sum of its proper divisors (1644805).

215452163 is a wasteful number, since it uses less digits than its factorization.

215452163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644804.

The product of its digits is 7200, while the sum is 29.

The square root of 215452163 is about 14678.2888307868. The cubic root of 215452163 is about 599.4923140647.

The spelling of 215452163 in words is "two hundred fifteen million, four hundred fifty-two thousand, one hundred sixty-three".