213505255 has 8 divisors (see below), whose sum is σ = 261657792. Its totient is φ = 167169888.

The previous prime is 213505231. The next prime is 213505289. The reversal of 213505255 is 552505312.

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

It is a cyclic number.

It is not a de Polignac number, because 213505255 - 2⁹ = 213504743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 454032 + ... + 454501.

It is an arithmetic number, because the mean of its divisors is an integer number (32707224).

Almost surely, 2^213505255 is an apocalyptic number.

213505255 is a deficient number, since it is larger than the sum of its proper divisors (48152537).

213505255 is an equidigital number, since it uses as much as digits as its factorization.

213505255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908585.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 213505255 is about 14611.8190174940. The cubic root of 213505255 is about 597.6811003121.

The spelling of 213505255 in words is "two hundred thirteen million, five hundred five thousand, two hundred fifty-five".