135530777 has 4 divisors (see below), whose sum is σ = 135569280. Its totient is φ = 135492276.

The previous prime is 135530771. The next prime is 135530807. The reversal of 135530777 is 777035531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 777035531 = 281 ⋅2765251.

It is a cyclic number.

It is not a de Polignac number, because 135530777 - 2⁴ = 135530761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135530777.

It is not an unprimeable number, because it can be changed into a prime (135530771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13373 + ... + 21210.

It is an arithmetic number, because the mean of its divisors is an integer number (33892320).

Almost surely, 2^135530777 is an apocalyptic number.

It is an amenable number.

135530777 is a deficient number, since it is larger than the sum of its proper divisors (38503).

135530777 is an equidigital number, since it uses as much as digits as its factorization.

135530777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38502.

The product of its (nonzero) digits is 77175, while the sum is 38.

The square root of 135530777 is about 11641.7686371101. The cubic root of 135530777 is about 513.6642128985.

The spelling of 135530777 in words is "one hundred thirty-five million, five hundred thirty thousand, seven hundred seventy-seven".