212534537 has 2 divisors, whose sum is σ = 212534538. Its totient is φ = 212534536.

The previous prime is 212534521. The next prime is 212534557. The reversal of 212534537 is 735435212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207676921 + 4857616 = 14411^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 212534537 - 2⁴ = 212534521 is a prime.

It is not a weakly prime, because it can be changed into another prime (212534507) 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 as a sum of consecutive naturals, namely, 106267268 + 106267269.

It is an arithmetic number, because the mean of its divisors is an integer number (106267269).

Almost surely, 2^212534537 is an apocalyptic number.

It is an amenable number.

212534537 is a deficient number, since it is larger than the sum of its proper divisors (1).

212534537 is an equidigital number, since it uses as much as digits as its factorization.

212534537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 32.

The square root of 212534537 is about 14578.5642983114. The cubic root of 212534537 is about 596.7739230979.

Adding to 212534537 its reverse (735435212), we get a palindrome (947969749).

The spelling of 212534537 in words is "two hundred twelve million, five hundred thirty-four thousand, five hundred thirty-seven".