212564145 has 16 divisors (see below), whose sum is σ = 342388800. Its totient is φ = 112605504.

The previous prime is 212564089. The next prime is 212564159. The reversal of 212564145 is 541465212.

It is not a de Polignac number, because 212564145 - 2⁶ = 212564081 is a prime.

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, 45319 + ... + 49788.

It is an arithmetic number, because the mean of its divisors is an integer number (21399300).

Almost surely, 2^212564145 is an apocalyptic number.

It is an amenable number.

212564145 is a deficient number, since it is larger than the sum of its proper divisors (129824655).

212564145 is a wasteful number, since it uses less digits than its factorization.

212564145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95264.

The product of its digits is 9600, while the sum is 30.

The square root of 212564145 is about 14579.5797264530. The cubic root of 212564145 is about 596.8016338285.

The spelling of 212564145 in words is "two hundred twelve million, five hundred sixty-four thousand, one hundred forty-five".