135522437 has 2 divisors, whose sum is σ = 135522438. Its totient is φ = 135522436.

The previous prime is 135522403. The next prime is 135522449. The reversal of 135522437 is 734225531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105863521 + 29658916 = 10289^2 + 5446^2 .

It is a cyclic number.

It is not a de Polignac number, because 135522437 - 2¹⁰ = 135521413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135525437) 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, 67761218 + 67761219.

It is an arithmetic number, because the mean of its divisors is an integer number (67761219).

Almost surely, 2^135522437 is an apocalyptic number.

It is an amenable number.

135522437 is a deficient number, since it is larger than the sum of its proper divisors (1).

135522437 is an equidigital number, since it uses as much as digits as its factorization.

135522437 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 135522437 is about 11641.4104386024. The cubic root of 135522437 is about 513.6536764297.

Adding to 135522437 its reverse (734225531), we get a palindrome (869747968).

The spelling of 135522437 in words is "one hundred thirty-five million, five hundred twenty-two thousand, four hundred thirty-seven".