215055703 has 4 divisors (see below), whose sum is σ = 215104248. Its totient is φ = 215007160.

The previous prime is 215055667. The next prime is 215055721. The reversal of 215055703 is 307550512.

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

It is a cyclic number.

It is not a de Polignac number, because 215055703 - 2¹⁷ = 214924631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215055733) 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 in 3 ways as a sum of consecutive naturals, for example, 16876 + ... + 26737.

It is an arithmetic number, because the mean of its divisors is an integer number (53776062).

Almost surely, 2^215055703 is an apocalyptic number.

215055703 is a deficient number, since it is larger than the sum of its proper divisors (48545).

215055703 is an equidigital number, since it uses as much as digits as its factorization.

215055703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48544.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 215055703 is about 14664.7776321361. Note that the first 3 decimals coincide. The cubic root of 215055703 is about 599.1243736785.

The spelling of 215055703 in words is "two hundred fifteen million, fifty-five thousand, seven hundred three".