135781052 has 24 divisors (see below), whose sum is σ = 270490752. Its totient is φ = 59034800.

The previous prime is 135781043. The next prime is 135781069. The reversal of 135781052 is 250187531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66074 + ... + 68097.

It is an arithmetic number, because the mean of its divisors is an integer number (11270448).

Almost surely, 2^135781052 is an apocalyptic number.

It is an amenable number.

135781052 is a deficient number, since it is larger than the sum of its proper divisors (134709700).

135781052 is a wasteful number, since it uses less digits than its factorization.

135781052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134209 (or 134207 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 135781052 is about 11652.5126904029. The cubic root of 135781052 is about 513.9802008049.

It can be divided in two parts, 135 and 781052, that added together give a palindrome (781187).

The spelling of 135781052 in words is "one hundred thirty-five million, seven hundred eighty-one thousand, fifty-two".