212256550 has 48 divisors (see below), whose sum is σ = 435065904. Its totient is φ = 76400000.

The previous prime is 212256533. The next prime is 212256553. The reversal of 212256550 is 55652212.

212256550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212256553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53640 + ... + 57460.

It is an arithmetic number, because the mean of its divisors is an integer number (9063873).

Almost surely, 2^212256550 is an apocalyptic number.

212256550 is an abundant number, since it is smaller than the sum of its proper divisors (222809354).

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

212256550 is a wasteful number, since it uses less digits than its factorization.

212256550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 212256550 is about 14569.0270780173. The cubic root of 212256550 is about 596.5136237982.

The spelling of 212256550 in words is "two hundred twelve million, two hundred fifty-six thousand, five hundred fifty".