52455423542121 has 64 divisors (see below), whose sum is σ = 82678601491200. Its totient is φ = 32811780492288.

The previous prime is 52455423542117. The next prime is 52455423542143. The reversal of 52455423542121 is 12124532455425.

52455423542121 is a `hidden beast` number, since 5 + 2 + 4 + 5 + 5 + 423 + 5 + 4 + 212 + 1 = 666.

It is not a de Polignac number, because 52455423542121 - 2² = 52455423542117 is a prime.

It is a super-4 number, since 4×52455423542121⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52455423542111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2678545 + ... + 10587041.

It is an arithmetic number, because the mean of its divisors is an integer number (1291853148300).

Almost surely, 2^{52455423542121} is an apocalyptic number.

It is an amenable number.

52455423542121 is a deficient number, since it is larger than the sum of its proper divisors (30223177949079).

52455423542121 is a wasteful number, since it uses less digits than its factorization.

52455423542121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7908775 (or 7908769 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 45.

Adding to 52455423542121 its reverse (12124532455425), we get a palindrome (64579955997546).

The spelling of 52455423542121 in words is "fifty-two trillion, four hundred fifty-five billion, four hundred twenty-three million, five hundred forty-two thousand, one hundred twenty-one".