104553122521 has 4 divisors (see below), whose sum is σ = 104571623332. Its totient is φ = 104534621712.

The previous prime is 104553122503. The next prime is 104553122533. The reversal of 104553122521 is 125221355401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125221355401 = 55147 ⋅2270683.

It can be written as a sum of positive squares in 2 ways, for example, as 73766560000 + 30786562521 = 271600^2 + 175461^2 .

It is a cyclic number.

It is not a de Polignac number, because 104553122521 - 2²⁹ = 104016251609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104553122021) 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 in 3 ways as a sum of consecutive naturals, for example, 9241926 + ... + 9253231.

It is an arithmetic number, because the mean of its divisors is an integer number (26142905833).

Almost surely, 2^104553122521 is an apocalyptic number.

It is an amenable number.

104553122521 is a deficient number, since it is larger than the sum of its proper divisors (18500811).

104553122521 is an equidigital number, since it uses as much as digits as its factorization.

104553122521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18500810.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 104553122521 its reverse (125221355401), we get a palindrome (229774477922).

The spelling of 104553122521 in words is "one hundred four billion, five hundred fifty-three million, one hundred twenty-two thousand, five hundred twenty-one".