212470545 has 16 divisors (see below), whose sum is σ = 388517760. Its totient is φ = 97129344.

The previous prime is 212470543. The next prime is 212470561. The reversal of 212470545 is 545074212.

It is not a de Polignac number, because 212470545 - 2¹ = 212470543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212470543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011660 + ... + 1011869.

It is an arithmetic number, because the mean of its divisors is an integer number (24282360).

Almost surely, 2^212470545 is an apocalyptic number.

It is an amenable number.

212470545 is a deficient number, since it is larger than the sum of its proper divisors (176047215).

212470545 is a wasteful number, since it uses less digits than its factorization.

212470545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023544.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 212470545 is about 14576.3694039359. The cubic root of 212470545 is about 596.7140228877.

The spelling of 212470545 in words is "two hundred twelve million, four hundred seventy thousand, five hundred forty-five".