136557727 has 2 divisors, whose sum is σ = 136557728. Its totient is φ = 136557726.

The previous prime is 136557689. The next prime is 136557763. The reversal of 136557727 is 727755631.

136557727 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 is an emirp because it is prime and its reverse (727755631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136557727 - 2⁷ = 136557599 is a prime.

It is equal to p_7728595 and since 136557727 and 7728595 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136557797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68278863 + 68278864.

It is an arithmetic number, because the mean of its divisors is an integer number (68278864).

Almost surely, 2^136557727 is an apocalyptic number.

136557727 is a deficient number, since it is larger than the sum of its proper divisors (1).

136557727 is an equidigital number, since it uses as much as digits as its factorization.

136557727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 308700, while the sum is 43.

The square root of 136557727 is about 11685.7916719408. The cubic root of 136557727 is about 514.9583364039.

The spelling of 136557727 in words is "one hundred thirty-six million, five hundred fifty-seven thousand, seven hundred twenty-seven".