216954155 has 8 divisors (see below), whose sum is σ = 284012784. Its totient is φ = 157784800.

The previous prime is 216954139. The next prime is 216954173. The reversal of 216954155 is 551459612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216954155 - 2⁴ = 216954139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972256 + ... + 1972365.

It is an arithmetic number, because the mean of its divisors is an integer number (35501598).

Almost surely, 2^216954155 is an apocalyptic number.

216954155 is a deficient number, since it is larger than the sum of its proper divisors (67058629).

216954155 is a wasteful number, since it uses less digits than its factorization.

216954155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944637.

The product of its digits is 54000, while the sum is 38.

The square root of 216954155 is about 14729.3636997665. The cubic root of 216954155 is about 600.8821791494.

The spelling of 216954155 in words is "two hundred sixteen million, nine hundred fifty-four thousand, one hundred fifty-five".