138522735 has 48 divisors (see below), whose sum is σ = 261110304. Its totient is φ = 67527936.

The previous prime is 138522731. The next prime is 138522751. The reversal of 138522735 is 537225831.

It is a happy number.

138522735 is a `hidden beast` number, since 1 + 385 + 2 + 273 + 5 = 666.

It is not a de Polignac number, because 138522735 - 2² = 138522731 is a prime.

It is a super-2 number, since 2×138522735² = 38377096223760450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138522735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138522731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61489 + ... + 63701.

It is an arithmetic number, because the mean of its divisors is an integer number (5439798).

Almost surely, 2^138522735 is an apocalyptic number.

138522735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138522735 is a deficient number, since it is larger than the sum of its proper divisors (122587569).

138522735 is a wasteful number, since it uses less digits than its factorization.

138522735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2341 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 138522735 is about 11769.5681738966. The cubic root of 138522735 is about 517.4165937134.

The spelling of 138522735 in words is "one hundred thirty-eight million, five hundred twenty-two thousand, seven hundred thirty-five".