1098554555 has 16 divisors (see below), whose sum is σ = 1520674560. Its totient is φ = 746251872.

The previous prime is 1098554519. The next prime is 1098554573. The reversal of 1098554555 is 5554558901.

It is a cyclic number.

It is not a de Polignac number, because 1098554555 - 2⁶ = 1098554491 is a prime.

It is a super-2 number, since 2×1098554555² = 2413644220622496050, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 142925 + ... + 150414.

It is an arithmetic number, because the mean of its divisors is an integer number (95042160).

Almost surely, 2^1098554555 is an apocalyptic number.

1098554555 is a deficient number, since it is larger than the sum of its proper divisors (422120005).

1098554555 is a wasteful number, since it uses less digits than its factorization.

1098554555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293458.

The product of its (nonzero) digits is 900000, while the sum is 47.

The square root of 1098554555 is about 33144.4498370391. The cubic root of 1098554555 is about 1031.8277644955.

The spelling of 1098554555 in words is "one billion, ninety-eight million, five hundred fifty-four thousand, five hundred fifty-five".