5621804401 has 2 divisors, whose sum is σ = 5621804402. Its totient is φ = 5621804400.

The previous prime is 5621804323. The next prime is 5621804411. The reversal of 5621804401 is 1044081265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4355868001 + 1265936400 = 65999^2 + 35580^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621804401 - 2²⁵ = 5588249969 is a prime.

It is not a weakly prime, because it can be changed into another prime (5621804411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2810902200 + 2810902201.

It is an arithmetic number, because the mean of its divisors is an integer number (2810902201).

Almost surely, 2^5621804401 is an apocalyptic number.

It is an amenable number.

5621804401 is a deficient number, since it is larger than the sum of its proper divisors (1).

5621804401 is an equidigital number, since it uses as much as digits as its factorization.

5621804401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 5621804401 is about 74978.6929800727. The cubic root of 5621804401 is about 1778.1098060877.

Adding to 5621804401 its reverse (1044081265), we get a palindrome (6665885666).

The spelling of 5621804401 in words is "five billion, six hundred twenty-one million, eight hundred four thousand, four hundred one".