135777751 has 2 divisors, whose sum is σ = 135777752. Its totient is φ = 135777750.

The previous prime is 135777731. The next prime is 135777767. The reversal of 135777751 is 157777531.

It is a strong prime.

It is an emirp because it is prime and its reverse (157777531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135777751 - 2¹³ = 135769559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135777698 and 135777707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135777731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67888875 + 67888876.

It is an arithmetic number, because the mean of its divisors is an integer number (67888876).

Almost surely, 2^135777751 is an apocalyptic number.

135777751 is a deficient number, since it is larger than the sum of its proper divisors (1).

135777751 is an equidigital number, since it uses as much as digits as its factorization.

135777751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180075, while the sum is 43.

The square root of 135777751 is about 11652.3710462721. The cubic root of 135777751 is about 513.9760356130.

The spelling of 135777751 in words is "one hundred thirty-five million, seven hundred seventy-seven thousand, seven hundred fifty-one".