138532801 has 4 divisors (see below), whose sum is σ = 151126704. Its totient is φ = 125938900.

The previous prime is 138532789. The next prime is 138532843. The reversal of 138532801 is 108235831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138532801 - 2¹¹ = 138530753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138532871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6296935 + ... + 6296956.

It is an arithmetic number, because the mean of its divisors is an integer number (37781676).

Almost surely, 2^138532801 is an apocalyptic number.

138532801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138532801 is a deficient number, since it is larger than the sum of its proper divisors (12593903).

138532801 is a wasteful number, since it uses less digits than its factorization.

138532801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593902.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 138532801 is about 11769.9957943918. The cubic root of 138532801 is about 517.4291264077.

The spelling of 138532801 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, eight hundred one".