52205121 has 8 divisors (see below), whose sum is σ = 77340960. Its totient is φ = 34803396.

The previous prime is 52205107. The next prime is 52205123. The reversal of 52205121 is 12150225.

It is not a de Polignac number, because 52205121 - 2⁵ = 52205089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52205094 and 52205103.

It is not an unprimeable number, because it can be changed into a prime (52205123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966735 + ... + 966788.

It is an arithmetic number, because the mean of its divisors is an integer number (9667620).

Almost surely, 2^52205121 is an apocalyptic number.

It is an amenable number.

52205121 is a deficient number, since it is larger than the sum of its proper divisors (25135839).

52205121 is a wasteful number, since it uses less digits than its factorization.

52205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933532 (or 1933526 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52205121 is about 7225.3111351692. The cubic root of 52205121 is about 373.7412515336.

Adding to 52205121 its reverse (12150225), we get a palindrome (64355346).

It can be divided in two parts, 52205 and 121, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 52205121 in words is "fifty-two million, two hundred five thousand, one hundred twenty-one".