55025550401 has 4 divisors (see below), whose sum is σ = 55079445204. Its totient is φ = 54971655600.

The previous prime is 55025550353. The next prime is 55025550403. The reversal of 55025550401 is 10405552055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10405552055 = 5 ⋅2081110411.

It can be written as a sum of positive squares in 2 ways, for example, as 29928654001 + 25096896400 = 172999^2 + 158420^2 .

It is a cyclic number.

It is not a de Polignac number, because 55025550401 - 2²⁶ = 54958441537 is a prime.

It is a super-2 number, since 2×55025550401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55025550403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26945870 + ... + 26947911.

It is an arithmetic number, because the mean of its divisors is an integer number (13769861301).

Almost surely, 2^55025550401 is an apocalyptic number.

It is an amenable number.

55025550401 is a deficient number, since it is larger than the sum of its proper divisors (53894803).

55025550401 is a wasteful number, since it uses less digits than its factorization.

55025550401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53894802.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 55025550401 in words is "fifty-five billion, twenty-five million, five hundred fifty thousand, four hundred one".