52220354421401 has 4 divisors (see below), whose sum is σ = 52220372096100. Its totient is φ = 52220336746704.

The previous prime is 52220354421397. The next prime is 52220354421413. The reversal of 52220354421401 is 10412445302225.

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 13896194617600 + 38324159803801 = 3727760^2 + 6190651^2 .

It is a cyclic number.

It is not a de Polignac number, because 52220354421401 - 2² = 52220354421397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52220354421491) 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, 3211946 + ... + 10712483.

It is an arithmetic number, because the mean of its divisors is an integer number (13055093024025).

Almost surely, 2^{52220354421401} is an apocalyptic number.

It is an amenable number.

52220354421401 is a deficient number, since it is larger than the sum of its proper divisors (17674699).

52220354421401 is a wasteful number, since it uses less digits than its factorization.

52220354421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674698.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 52220354421401 its reverse (10412445302225), we get a palindrome (62632799723626).

The spelling of 52220354421401 in words is "fifty-two trillion, two hundred twenty billion, three hundred fifty-four million, four hundred twenty-one thousand, four hundred one".