212715253 has 4 divisors (see below), whose sum is σ = 213628428. Its totient is φ = 211802080.

The previous prime is 212715229. The next prime is 212715287. The reversal of 212715253 is 352517212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55011889 + 157703364 = 7417^2 + 12558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212715253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212716253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456238 + ... + 456703.

It is an arithmetic number, because the mean of its divisors is an integer number (53407107).

Almost surely, 2^212715253 is an apocalyptic number.

It is an amenable number.

212715253 is a deficient number, since it is larger than the sum of its proper divisors (913175).

212715253 is an equidigital number, since it uses as much as digits as its factorization.

212715253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913174.

The product of its digits is 4200, while the sum is 28.

The square root of 212715253 is about 14584.7609853573. The cubic root of 212715253 is about 596.9430188211.

The spelling of 212715253 in words is "two hundred twelve million, seven hundred fifteen thousand, two hundred fifty-three".