138552941 has 4 divisors (see below), whose sum is σ = 146703132. Its totient is φ = 130402752.

The previous prime is 138552929. The next prime is 138552949. The reversal of 138552941 is 149255831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61622500 + 76930441 = 7850^2 + 8771^2 .

It is a cyclic number.

It is not a de Polignac number, because 138552941 - 2⁶ = 138552877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138552895 and 138552904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138552949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4075070 + ... + 4075103.

It is an arithmetic number, because the mean of its divisors is an integer number (36675783).

Almost surely, 2^138552941 is an apocalyptic number.

It is an amenable number.

138552941 is a deficient number, since it is larger than the sum of its proper divisors (8150191).

138552941 is an equidigital number, since it uses as much as digits as its factorization.

138552941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8150190.

The product of its digits is 43200, while the sum is 38.

The square root of 138552941 is about 11770.8513285998. The cubic root of 138552941 is about 517.4541999343.

The spelling of 138552941 in words is "one hundred thirty-eight million, five hundred fifty-two thousand, nine hundred forty-one".