135822481 has 2 divisors, whose sum is σ = 135822482. Its totient is φ = 135822480.

The previous prime is 135822461. The next prime is 135822493. The reversal of 135822481 is 184228531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 3940225 = 11484^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 135822481 - 2⁷ = 135822353 is a prime.

It is a super-4 number, since 4×135822481⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (135822451) 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, 67911240 + 67911241.

It is an arithmetic number, because the mean of its divisors is an integer number (67911241).

Almost surely, 2^135822481 is an apocalyptic number.

It is an amenable number.

135822481 is a deficient number, since it is larger than the sum of its proper divisors (1).

135822481 is an equidigital number, since it uses as much as digits as its factorization.

135822481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 34.

The square root of 135822481 is about 11654.2902400790. The cubic root of 135822481 is about 514.0324700528.

The spelling of 135822481 in words is "one hundred thirty-five million, eight hundred twenty-two thousand, four hundred eighty-one".