135654557 has 2 divisors, whose sum is σ = 135654558. Its totient is φ = 135654556.

The previous prime is 135654553. The next prime is 135654559. The reversal of 135654557 is 755456531.

135654557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77070841 + 58583716 = 8779^2 + 7654^2 .

It is a cyclic number.

It is not a de Polignac number, because 135654557 - 2² = 135654553 is a prime.

Together with 135654559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135654553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67827278 + 67827279.

It is an arithmetic number, because the mean of its divisors is an integer number (67827279).

Almost surely, 2^135654557 is an apocalyptic number.

It is an amenable number.

135654557 is a deficient number, since it is larger than the sum of its proper divisors (1).

135654557 is an equidigital number, since it uses as much as digits as its factorization.

135654557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 41.

The square root of 135654557 is about 11647.0836263848. The cubic root of 135654557 is about 513.8205414984.

The spelling of 135654557 in words is "one hundred thirty-five million, six hundred fifty-four thousand, five hundred fifty-seven".