212424550 has 72 divisors (see below), whose sum is σ = 446850864. Its totient is φ = 74954880.

The previous prime is 212424539. The next prime is 212424551. The reversal of 212424550 is 55424212.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212424551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 193804 + ... + 194896.

It is an arithmetic number, because the mean of its divisors is an integer number (6206262).

Almost surely, 2^212424550 is an apocalyptic number.

212424550 is an abundant number, since it is smaller than the sum of its proper divisors (234426314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212424550 is a wasteful number, since it uses less digits than its factorization.

212424550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 212424550 is about 14574.7915937073. The cubic root of 212424550 is about 596.6709614802.

Adding to 212424550 its reverse (55424212), we get a palindrome (267848762).

The spelling of 212424550 in words is "two hundred twelve million, four hundred twenty-four thousand, five hundred fifty".