52121252424401 has 4 divisors (see below), whose sum is σ = 52141700152500. Its totient is φ = 52100804696304.

The previous prime is 52121252424389. The next prime is 52121252424487. The reversal of 52121252424401 is 10442425212125.

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 26280540867025 + 25840711557376 = 5126455^2 + 5083376^2 .

It is a cyclic number.

It is not a de Polignac number, because 52121252424401 - 2¹⁰ = 52121252423377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52121255424401) 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, 10223860226 + ... + 10223865323.

It is an arithmetic number, because the mean of its divisors is an integer number (13035425038125).

Almost surely, 2^{52121252424401} is an apocalyptic number.

It is an amenable number.

52121252424401 is a deficient number, since it is larger than the sum of its proper divisors (20447728099).

52121252424401 is a wasteful number, since it uses less digits than its factorization.

52121252424401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20447728098.

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 52121252424401 its reverse (10442425212125), we get a palindrome (62563677636526).

The spelling of 52121252424401 in words is "fifty-two trillion, one hundred twenty-one billion, two hundred fifty-two million, four hundred twenty-four thousand, four hundred one".