135056881 has 2 divisors, whose sum is σ = 135056882. Its totient is φ = 135056880.

The previous prime is 135056869. The next prime is 135056903. The reversal of 135056881 is 188650531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134351281 + 705600 = 11591^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 135056881 - 2⁵ = 135056849 is a prime.

It is a super-2 number, since 2×135056881² = 36480722210896322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135056881.

It is not a weakly prime, because it can be changed into another prime (135056821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67528440 + 67528441.

It is an arithmetic number, because the mean of its divisors is an integer number (67528441).

Almost surely, 2^135056881 is an apocalyptic number.

It is an amenable number.

135056881 is a deficient number, since it is larger than the sum of its proper divisors (1).

135056881 is an equidigital number, since it uses as much as digits as its factorization.

135056881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 135056881 is about 11621.3975493484. The cubic root of 135056881 is about 513.0648221396.

The spelling of 135056881 in words is "one hundred thirty-five million, fifty-six thousand, eight hundred eighty-one".