210424055 has 4 divisors (see below), whose sum is σ = 252508872. Its totient is φ = 168339240.

The previous prime is 210424037. The next prime is 210424061. The reversal of 210424055 is 550424012.

It is a happy number.

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

It is not a de Polignac number, because 210424055 - 2²⁴ = 193646839 is a prime.

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 210424055.

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, 21042401 + ... + 21042410.

It is an arithmetic number, because the mean of its divisors is an integer number (63127218).

Almost surely, 2^210424055 is an apocalyptic number.

210424055 is a deficient number, since it is larger than the sum of its proper divisors (42084817).

210424055 is an equidigital number, since it uses as much as digits as its factorization.

210424055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42084816.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 210424055 is about 14506.0006549014. Note that the first 3 decimals coincide. The cubic root of 210424055 is about 594.7920135516.

Adding to 210424055 its reverse (550424012), we get a palindrome (760848067).

The spelling of 210424055 in words is "two hundred ten million, four hundred twenty-four thousand, fifty-five".