52123421501 has 4 divisors (see below), whose sum is σ = 52126031100. Its totient is φ = 52120811904.

The previous prime is 52123421431. The next prime is 52123421507. The reversal of 52123421501 is 10512432125.

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 32439612100 + 19683809401 = 180110^2 + 140299^2 .

It is a cyclic number.

It is not a de Polignac number, because 52123421501 - 2¹⁸ = 52123159357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52123421507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274606 + ... + 1314863.

It is an arithmetic number, because the mean of its divisors is an integer number (13031507775).

Almost surely, 2^52123421501 is an apocalyptic number.

It is an amenable number.

52123421501 is a deficient number, since it is larger than the sum of its proper divisors (2609599).

52123421501 is a wasteful number, since it uses less digits than its factorization.

52123421501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609598.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 52123421501 its reverse (10512432125), we get a palindrome (62635853626).

The spelling of 52123421501 in words is "fifty-two billion, one hundred twenty-three million, four hundred twenty-one thousand, five hundred one".