5505550555501 has 4 divisors (see below), whose sum is σ = 5507108880732. Its totient is φ = 5503992230272.

The previous prime is 5505550555499. The next prime is 5505550555507. The reversal of 5505550555501 is 1055550555055.

It is a happy number.

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 4374414080100 + 1131136475401 = 2091510^2 + 1063549^2 .

It is a cyclic number.

It is not a de Polignac number, because 5505550555501 - 2¹ = 5505550555499 is a prime.

It is a super-2 number, since 2×5505550555501² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5505550555507) 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, 779157316 + ... + 779164381.

It is an arithmetic number, because the mean of its divisors is an integer number (1376777220183).

Almost surely, 2^{5505550555501} is an apocalyptic number.

It is an amenable number.

5505550555501 is a deficient number, since it is larger than the sum of its proper divisors (1558325231).

5505550555501 is a wasteful number, since it uses less digits than its factorization.

5505550555501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558325230.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 5505550555501 in words is "five trillion, five hundred five billion, five hundred fifty million, five hundred fifty-five thousand, five hundred one".