210553055 has 4 divisors (see below), whose sum is σ = 252663672. Its totient is φ = 168442440.

The previous prime is 210553043. The next prime is 210553067. The reversal of 210553055 is 550355012.

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

It is an interprime number because it is at equal distance from previous prime (210553043) and next prime (210553067).

It is not a de Polignac number, because 210553055 - 2⁴ = 210553039 is a prime.

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, 21055301 + ... + 21055310.

It is an arithmetic number, because the mean of its divisors is an integer number (63165918).

Almost surely, 2^210553055 is an apocalyptic number.

210553055 is a deficient number, since it is larger than the sum of its proper divisors (42110617).

210553055 is an equidigital number, since it uses as much as digits as its factorization.

210553055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42110616.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 210553055 is about 14510.4464093976. The cubic root of 210553055 is about 594.9135340304.

The spelling of 210553055 in words is "two hundred ten million, five hundred fifty-three thousand, fifty-five".