1011055555 has 4 divisors (see below), whose sum is σ = 1213266672. Its totient is φ = 808844440.

The previous prime is 1011055543. The next prime is 1011055561. The reversal of 1011055555 is 5555501101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5555501101 = 179 ⋅31036319.

It is not a de Polignac number, because 1011055555 - 2⁷ = 1011055427 is a prime.

It is a Duffinian number.

1011055555 is a modest number, since divided by 55555 gives 10110 as remainder.

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 3 ways as a sum of consecutive naturals, for example, 101105551 + ... + 101105560.

It is an arithmetic number, because the mean of its divisors is an integer number (303316668).

Almost surely, 2^1011055555 is an apocalyptic number.

1011055555 is a deficient number, since it is larger than the sum of its proper divisors (202211117).

1011055555 is an equidigital number, since it uses as much as digits as its factorization.

1011055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202211116.

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 1011055555 is about 31797.0997891317. The cubic root of 1011055555 is about 1003.6716872133.

Adding to 1011055555 its reverse (5555501101), we get a palindrome (6566556656).

The spelling of 1011055555 in words is "one billion, eleven million, fifty-five thousand, five hundred fifty-five".