219855155 has 8 divisors (see below), whose sum is σ = 284120592. Its totient is φ = 162354528.

The previous prime is 219855149. The next prime is 219855157. The reversal of 219855155 is 551558912.

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

It is a cyclic number.

It is not a de Polignac number, because 219855155 - 2²⁰ = 218806579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219855157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691129 + ... + 1691258.

It is an arithmetic number, because the mean of its divisors is an integer number (35515074).

Almost surely, 2^219855155 is an apocalyptic number.

219855155 is a deficient number, since it is larger than the sum of its proper divisors (64265437).

219855155 is a wasteful number, since it uses less digits than its factorization.

219855155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382405.

The product of its digits is 90000, while the sum is 41.

The square root of 219855155 is about 14827.5134462930. The cubic root of 219855155 is about 603.5485594647.

The spelling of 219855155 in words is "two hundred nineteen million, eight hundred fifty-five thousand, one hundred fifty-five".