1155555498 has 16 divisors (see below), whose sum is σ = 2324952000. Its totient is φ = 382878336.

The previous prime is 1155555487. The next prime is 1155555503. The reversal of 1155555498 is 8945555511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575623 + ... + 577626.

It is an arithmetic number, because the mean of its divisors is an integer number (145309500).

Almost surely, 2^1155555498 is an apocalyptic number.

1155555498 is an abundant number, since it is smaller than the sum of its proper divisors (1169396502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155555498 is a wasteful number, since it uses less digits than its factorization.

1155555498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153421.

The product of its digits is 900000, while the sum is 48.

The square root of 1155555498 is about 33993.4625773839. The cubic root of 1155555498 is about 1049.3739269987.

The spelling of 1155555498 in words is "one billion, one hundred fifty-five million, five hundred fifty-five thousand, four hundred ninety-eight".