214801855 has 4 divisors (see below), whose sum is σ = 257762232. Its totient is φ = 171841480.

The previous prime is 214801849. The next prime is 214801871. The reversal of 214801855 is 558108412.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-214801855 is a prime.

It is a super-2 number, since 2×214801855² = 92279673822882050, which contains 22 as substring.

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 214801855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21480181 + ... + 21480190.

It is an arithmetic number, because the mean of its divisors is an integer number (64440558).

Almost surely, 2^214801855 is an apocalyptic number.

214801855 is a deficient number, since it is larger than the sum of its proper divisors (42960377).

214801855 is an equidigital number, since it uses as much as digits as its factorization.

214801855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42960376.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 214801855 is about 14656.1200527288. The cubic root of 214801855 is about 598.8885488801. Note that the first 3 decimals are identical.

The spelling of 214801855 in words is "two hundred fourteen million, eight hundred one thousand, eight hundred fifty-five".