212505450 has 24 divisors (see below), whose sum is σ = 527013888. Its totient is φ = 56668080.

The previous prime is 212505437. The next prime is 212505473. The reversal of 212505450 is 54505212.

It is a happy number.

212505450 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 an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 212505450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708202 + ... + 708501.

It is an arithmetic number, because the mean of its divisors is an integer number (21958912).

Almost surely, 2^212505450 is an apocalyptic number.

212505450 is an abundant number, since it is smaller than the sum of its proper divisors (314508438).

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

212505450 is a wasteful number, since it uses less digits than its factorization.

212505450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416718 (or 1416713 counting only the distinct ones).

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

The square root of 212505450 is about 14577.5666693725. The cubic root of 212505450 is about 596.7466974757.

The spelling of 212505450 in words is "two hundred twelve million, five hundred five thousand, four hundred fifty".