212553066 has 32 divisors (see below), whose sum is σ = 468269568. Its totient is φ = 63782640.

The previous prime is 212553053. The next prime is 212553071. The reversal of 212553066 is 660355212.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8836 + ... + 22431.

It is an arithmetic number, because the mean of its divisors is an integer number (14633424).

Almost surely, 2^212553066 is an apocalyptic number.

212553066 is an abundant number, since it is smaller than the sum of its proper divisors (255716502).

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

212553066 is a wasteful number, since it uses less digits than its factorization.

212553066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31386.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 212553066 is about 14579.1997722783. The cubic root of 212553066 is about 596.7912650679.

The spelling of 212553066 in words is "two hundred twelve million, five hundred fifty-three thousand, sixty-six".