135555438 has 16 divisors (see below), whose sum is σ = 271231056. Its totient is φ = 45165120.

The previous prime is 135555437. The next prime is 135555449. The reversal of 135555438 is 834555531.

It is a junction number, because it is equal to n+sod(n) for n = 135555396 and 135555405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135555437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17308 + ... + 23888.

It is an arithmetic number, because the mean of its divisors is an integer number (16951941).

Almost surely, 2^135555438 is an apocalyptic number.

135555438 is an abundant number, since it is smaller than the sum of its proper divisors (135675618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135555438 is a wasteful number, since it uses less digits than its factorization.

135555438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10019.

The product of its digits is 180000, while the sum is 39.

The square root of 135555438 is about 11642.8277493056. The cubic root of 135555438 is about 513.6953662281.

The spelling of 135555438 in words is "one hundred thirty-five million, five hundred fifty-five thousand, four hundred thirty-eight".