5555555554 has 4 divisors (see below), whose sum is σ = 8333333334. Its totient is φ = 2777777776.

The previous prime is 5555555519. The next prime is 5555555557. The reversal of 5555555554 is 4555555555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5546823529 + 8732025 = 74477^2 + 2955^2 .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 5555555498 and 5555555507.

It is not an unprimeable number, because it can be changed into a prime (5555555557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388888887 + ... + 1388888890.

Almost surely, 2^5555555554 is an apocalyptic number.

5555555554 is a deficient number, since it is larger than the sum of its proper divisors (2777777780).

5555555554 is a wasteful number, since it uses less digits than its factorization.

5555555554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777777779.

The product of its digits is 7812500, while the sum is 49.

The square root of 5555555554 is about 74535.5992395580. The cubic root of 5555555554 is about 1771.0976151390.

Subtracting from 5555555554 its reverse (4555555555), we obtain a palindrome (999999999).

The spelling of 5555555554 in words is "five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-four".