212753897 has 2 divisors, whose sum is σ = 212753898. Its totient is φ = 212753896.

The previous prime is 212753869. The next prime is 212753917. The reversal of 212753897 is 798357212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207821056 + 4932841 = 14416^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 212753897 - 2⁶ = 212753833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212753867) 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 as a sum of consecutive naturals, namely, 106376948 + 106376949.

It is an arithmetic number, because the mean of its divisors is an integer number (106376949).

Almost surely, 2^212753897 is an apocalyptic number.

It is an amenable number.

212753897 is a deficient number, since it is larger than the sum of its proper divisors (1).

212753897 is an equidigital number, since it uses as much as digits as its factorization.

212753897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 212753897 is about 14586.0857326426. The cubic root of 212753897 is about 596.9791655304.

The spelling of 212753897 in words is "two hundred twelve million, seven hundred fifty-three thousand, eight hundred ninety-seven".