55000005553 has 4 divisors (see below), whose sum is σ = 55025696628. Its totient is φ = 54974314480.

The previous prime is 55000005551. The next prime is 55000005559. The reversal of 55000005553 is 35550000055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35550000055 = 5 ⋅7110000011.

It can be written as a sum of positive squares in 2 ways, for example, as 30208873249 + 24791132304 = 173807^2 + 157452^2 .

It is a cyclic number.

It is not a de Polignac number, because 55000005553 - 2¹ = 55000005551 is a prime.

It is a super-2 number, since 2×55000005553² (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 (55000005551) 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, 12842326 + ... + 12846607.

It is an arithmetic number, because the mean of its divisors is an integer number (13756424157).

Almost surely, 2^55000005553 is an apocalyptic number.

It is an amenable number.

55000005553 is a deficient number, since it is larger than the sum of its proper divisors (25691075).

55000005553 is a wasteful number, since it uses less digits than its factorization.

55000005553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25691074.

The product of its (nonzero) digits is 9375, while the sum is 28.

The spelling of 55000005553 in words is "fifty-five billion, five thousand, five hundred fifty-three".