52139216121001 has 9 divisors (see below), whose sum is σ = 52250021984349. Its totient is φ = 52028644791564.

The previous prime is 52139216120933. The next prime is 52139216121011. The reversal of 52139216121001 is 10012161293125.

The square root of 52139216121001 is 7220749.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 52139216121001 - 2⁹ = 52139216120489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52139216121011) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3516497350 + ... + 3516512176.

It is an arithmetic number, because the mean of its divisors is an integer number (5805557998261).

Almost surely, 2^{52139216121001} is an apocalyptic number.

52139216121001 is the 7220749-th square number.

52139216121001 is the 3610375-th centered octagonal number.

It is an amenable number.

52139216121001 is a deficient number, since it is larger than the sum of its proper divisors (110805863348).

52139216121001 is an frugal number, since it uses more digits than its factorization.

52139216121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30628 (or 15314 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 52139216121001 in words is "fifty-two trillion, one hundred thirty-nine billion, two hundred sixteen million, one hundred twenty-one thousand, one".