135561259 has 2 divisors, whose sum is σ = 135561260. Its totient is φ = 135561258.

The previous prime is 135561253. The next prime is 135561271. The reversal of 135561259 is 952165531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135561259 - 2⁷ = 135561131 is a prime.

It is not a weakly prime, because it can be changed into another prime (135561253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67780629 + 67780630.

It is an arithmetic number, because the mean of its divisors is an integer number (67780630).

Almost surely, 2^135561259 is an apocalyptic number.

135561259 is a deficient number, since it is larger than the sum of its proper divisors (1).

135561259 is an equidigital number, since it uses as much as digits as its factorization.

135561259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 37.

The square root of 135561259 is about 11643.0777288482. The cubic root of 135561259 is about 513.7027191310.

The spelling of 135561259 in words is "one hundred thirty-five million, five hundred sixty-one thousand, two hundred fifty-nine".