135911057 has 4 divisors (see below), whose sum is σ = 135959040. Its totient is φ = 135863076.

The previous prime is 135911051. The next prime is 135911077. The reversal of 135911057 is 750119531.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 135911057 - 2⁶ = 135910993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135911051) 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, 19457 + ... + 25502.

It is an arithmetic number, because the mean of its divisors is an integer number (33989760).

Almost surely, 2^135911057 is an apocalyptic number.

It is an amenable number.

135911057 is a deficient number, since it is larger than the sum of its proper divisors (47983).

135911057 is an equidigital number, since it uses as much as digits as its factorization.

135911057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47982.

The product of its (nonzero) digits is 4725, while the sum is 32.

The square root of 135911057 is about 11658.0897663382. The cubic root of 135911057 is about 514.1441870669.

The spelling of 135911057 in words is "one hundred thirty-five million, nine hundred eleven thousand, fifty-seven".