135878051 has 2 divisors, whose sum is σ = 135878052. Its totient is φ = 135878050.

The previous prime is 135878033. The next prime is 135878111. The reversal of 135878051 is 150878531.

It is a weak prime.

It is an emirp because it is prime and its reverse (150878531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135878051 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135877996 and 135878014.

It is not a weakly prime, because it can be changed into another prime (135878851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67939025 + 67939026.

It is an arithmetic number, because the mean of its divisors is an integer number (67939026).

Almost surely, 2^135878051 is an apocalyptic number.

135878051 is a deficient number, since it is larger than the sum of its proper divisors (1).

135878051 is an equidigital number, since it uses as much as digits as its factorization.

135878051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 135878051 is about 11656.6740968425. The cubic root of 135878051 is about 514.1025637256.

The spelling of 135878051 in words is "one hundred thirty-five million, eight hundred seventy-eight thousand, fifty-one".