218455201 has 8 divisors (see below), whose sum is σ = 226162944. Its totient is φ = 210875040.

The previous prime is 218455189. The next prime is 218455243. The reversal of 218455201 is 102554812.

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 218455201 - 2⁹ = 218454689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218455201.

It is not an unprimeable number, because it can be changed into a prime (218455271) 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, 28405 + ... + 35266.

It is an arithmetic number, because the mean of its divisors is an integer number (28270368).

Almost surely, 2^218455201 is an apocalyptic number.

It is an amenable number.

218455201 is a deficient number, since it is larger than the sum of its proper divisors (7707743).

218455201 is an equidigital number, since it uses as much as digits as its factorization.

218455201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63791.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 218455201 is about 14780.2300726342. The cubic root of 218455201 is about 602.2647748282.

The spelling of 218455201 in words is "two hundred eighteen million, four hundred fifty-five thousand, two hundred one".