218055353 has 2 divisors, whose sum is σ = 218055354. Its totient is φ = 218055352.

The previous prime is 218055349. The next prime is 218055371. The reversal of 218055353 is 353550812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150601984 + 67453369 = 12272^2 + 8213^2 .

It is a cyclic number.

It is not a de Polignac number, because 218055353 - 2² = 218055349 is a prime.

It is not a weakly prime, because it can be changed into another prime (218055323) by changing a digit.

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 as a sum of consecutive naturals, namely, 109027676 + 109027677.

It is an arithmetic number, because the mean of its divisors is an integer number (109027677).

Almost surely, 2^218055353 is an apocalyptic number.

It is an amenable number.

218055353 is a deficient number, since it is larger than the sum of its proper divisors (1).

218055353 is an equidigital number, since it uses as much as digits as its factorization.

218055353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 218055353 is about 14766.6974303668. The cubic root of 218055353 is about 601.8970999938.

The spelling of 218055353 in words is "two hundred eighteen million, fifty-five thousand, three hundred fifty-three".