135548891 has 2 divisors, whose sum is σ = 135548892. Its totient is φ = 135548890.

The previous prime is 135548879. The next prime is 135548947. The reversal of 135548891 is 198845531.

135548891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135548891 - 2¹⁸ = 135286747 is a prime.

It is not a weakly prime, because it can be changed into another prime (135548801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67774445 + 67774446.

It is an arithmetic number, because the mean of its divisors is an integer number (67774446).

Almost surely, 2^135548891 is an apocalyptic number.

135548891 is a deficient number, since it is larger than the sum of its proper divisors (1).

135548891 is an equidigital number, since it uses as much as digits as its factorization.

135548891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 44.

The square root of 135548891 is about 11642.5465856916. The cubic root of 135548891 is about 513.6870960134.

The spelling of 135548891 in words is "one hundred thirty-five million, five hundred forty-eight thousand, eight hundred ninety-one".