212550245 has 32 divisors (see below), whose sum is σ = 283564800. Its totient is φ = 152216064.

The previous prime is 212550241. The next prime is 212550253. The reversal of 212550245 is 542055212.

It is a cyclic number.

It is not a de Polignac number, because 212550245 - 2² = 212550241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212550241) by changing a digit.

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, 193919 + ... + 195011.

It is an arithmetic number, because the mean of its divisors is an integer number (8861400).

Almost surely, 2^212550245 is an apocalyptic number.

It is an amenable number.

212550245 is a deficient number, since it is larger than the sum of its proper divisors (71014555).

212550245 is a wasteful number, since it uses less digits than its factorization.

212550245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 212550245 is about 14579.1030245348. The cubic root of 212550245 is about 596.7886248557.

The spelling of 212550245 in words is "two hundred twelve million, five hundred fifty thousand, two hundred forty-five".