212532137 has 2 divisors, whose sum is σ = 212532138. Its totient is φ = 212532136.

The previous prime is 212532091. The next prime is 212532143. The reversal of 212532137 is 731235212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212459776 + 72361 = 14576^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 212532137 - 2⁸ = 212531881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212532197) 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, 106266068 + 106266069.

It is an arithmetic number, because the mean of its divisors is an integer number (106266069).

Almost surely, 2^212532137 is an apocalyptic number.

It is an amenable number.

212532137 is a deficient number, since it is larger than the sum of its proper divisors (1).

212532137 is an equidigital number, since it uses as much as digits as its factorization.

212532137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 212532137 is about 14578.4819854469. The cubic root of 212532137 is about 596.7716767762.

Adding to 212532137 its reverse (731235212), we get a palindrome (943767349).

The spelling of 212532137 in words is "two hundred twelve million, five hundred thirty-two thousand, one hundred thirty-seven".