212715545 has 32 divisors (see below), whose sum is σ = 308966400. Its totient is φ = 137336256.

The previous prime is 212715533. The next prime is 212715563. The reversal of 212715545 is 545517212.

It is not a de Polignac number, because 212715545 - 2⁸ = 212715289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118142 + ... + 119928.

It is an arithmetic number, because the mean of its divisors is an integer number (9655200).

Almost surely, 2^212715545 is an apocalyptic number.

It is an amenable number.

212715545 is a deficient number, since it is larger than the sum of its proper divisors (96250855).

212715545 is a wasteful number, since it uses less digits than its factorization.

212715545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its digits is 14000, while the sum is 32.

The square root of 212715545 is about 14584.7709958024. The cubic root of 212715545 is about 596.9432919676.

The spelling of 212715545 in words is "two hundred twelve million, seven hundred fifteen thousand, five hundred forty-five".