212550450 has 192 divisors, whose sum is σ = 634245120. Its totient is φ = 46103040.

The previous prime is 212550433. The next prime is 212550487. The reversal of 212550450 is 54055212.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212550450.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2911614 + ... + 2911686.

It is an arithmetic number, because the mean of its divisors is an integer number (3303360).

Almost surely, 2^212550450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212550450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317122560).

212550450 is an abundant number, since it is smaller than the sum of its proper divisors (421694670).

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

212550450 is a wasteful number, since it uses less digits than its factorization.

212550450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 212550450 is about 14579.1100551440. The cubic root of 212550450 is about 596.7888167187.

The spelling of 212550450 in words is "two hundred twelve million, five hundred fifty thousand, four hundred fifty".