135955903 has 2 divisors, whose sum is σ = 135955904. Its totient is φ = 135955902.

The previous prime is 135955847. The next prime is 135955943. The reversal of 135955903 is 309559531.

135955903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (135955943) can be obtained adding 135955903 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135955903 - 2²⁵ = 102401471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135955943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67977951 + 67977952.

It is an arithmetic number, because the mean of its divisors is an integer number (67977952).

Almost surely, 2^135955903 is an apocalyptic number.

135955903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135955903 is an equidigital number, since it uses as much as digits as its factorization.

135955903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91125, while the sum is 40.

The square root of 135955903 is about 11660.0129931317. The cubic root of 135955903 is about 514.2007308467.

The spelling of 135955903 in words is "one hundred thirty-five million, nine hundred fifty-five thousand, nine hundred three".