214509005 has 4 divisors (see below), whose sum is σ = 257410812. Its totient is φ = 171607200.

The previous prime is 214508989. The next prime is 214509013. The reversal of 214509005 is 500905412.

214509005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58033924 + 156475081 = 7618^2 + 12509^2 .

It is not a de Polignac number, because 214509005 - 2⁴ = 214508989 is a prime.

It is a super-2 number, since 2×214509005² = 92028226452180050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21450896 + ... + 21450905.

It is an arithmetic number, because the mean of its divisors is an integer number (64352703).

Almost surely, 2^214509005 is an apocalyptic number.

It is an amenable number.

214509005 is a deficient number, since it is larger than the sum of its proper divisors (42901807).

214509005 is an equidigital number, since it uses as much as digits as its factorization.

214509005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42901806.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 214509005 is about 14646.1259382814. The cubic root of 214509005 is about 598.6162603014.

The spelling of 214509005 in words is "two hundred fourteen million, five hundred nine thousand, five".