135305557 has 2 divisors, whose sum is σ = 135305558. Its totient is φ = 135305556.

The previous prime is 135305539. The next prime is 135305579. The reversal of 135305557 is 755503531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119377476 + 15928081 = 10926^2 + 3991^2 .

It is a cyclic number.

It is not a de Polignac number, because 135305557 - 2¹⁵ = 135272789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135305587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67652778 + 67652779.

It is an arithmetic number, because the mean of its divisors is an integer number (67652779).

Almost surely, 2^135305557 is an apocalyptic number.

It is an amenable number.

135305557 is a deficient number, since it is larger than the sum of its proper divisors (1).

135305557 is an equidigital number, since it uses as much as digits as its factorization.

135305557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 34.

The square root of 135305557 is about 11632.0916863649. The cubic root of 135305557 is about 513.3795257902.

The spelling of 135305557 in words is "one hundred thirty-five million, three hundred five thousand, five hundred fifty-seven".