52100220404 has 6 divisors (see below), whose sum is σ = 91175385714. Its totient is φ = 26050110200.

The previous prime is 52100220373. The next prime is 52100220413. The reversal of 52100220404 is 40402200125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44609664100 + 7490556304 = 211210^2 + 86548^2 .

It is a super-2 number, since 2×52100220404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6512527547 + ... + 6512527554.

It is an arithmetic number, because the mean of its divisors is an integer number (15195897619).

Almost surely, 2^52100220404 is an apocalyptic number.

It is an amenable number.

52100220404 is a deficient number, since it is larger than the sum of its proper divisors (39075165310).

52100220404 is a wasteful number, since it uses less digits than its factorization.

52100220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13025055105 (or 13025055103 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 52100220404 its reverse (40402200125), we get a palindrome (92502420529).

The spelling of 52100220404 in words is "fifty-two billion, one hundred million, two hundred twenty thousand, four hundred four".