218050553 has 8 divisors (see below), whose sum is σ = 249956160. Its totient is φ = 186333840.

The previous prime is 218050541. The next prime is 218050561. The reversal of 218050553 is 355050812.

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

It is not a de Polignac number, because 218050553 - 2⁴ = 218050537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218050513) 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, 44738 + ... + 49371.

It is an arithmetic number, because the mean of its divisors is an integer number (31244520).

Almost surely, 2^218050553 is an apocalyptic number.

It is an amenable number.

218050553 is a deficient number, since it is larger than the sum of its proper divisors (31905607).

218050553 is an equidigital number, since it uses as much as digits as its factorization.

218050553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94447.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 218050553 is about 14766.5349015942. The cubic root of 218050553 is about 601.8926834894.

The spelling of 218050553 in words is "two hundred eighteen million, fifty thousand, five hundred fifty-three".