138522552 has 32 divisors (see below), whose sum is σ = 395779200. Its totient is φ = 39577824.

The previous prime is 138522533. The next prime is 138522569. The reversal of 138522552 is 255225831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412102 + ... + 412437.

It is an arithmetic number, because the mean of its divisors is an integer number (12368100).

Almost surely, 2^138522552 is an apocalyptic number.

138522552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138522552 is an abundant number, since it is smaller than the sum of its proper divisors (257256648).

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

138522552 is a wasteful number, since it uses less digits than its factorization.

138522552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824555 (or 824551 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 138522552 is about 11769.5603996071. The cubic root of 138522552 is about 517.4163658632.

The spelling of 138522552 in words is "one hundred thirty-eight million, five hundred twenty-two thousand, five hundred fifty-two".