1000055511 has 32 divisors (see below), whose sum is σ = 1823467520. Its totient is φ = 527500512.

The previous prime is 1000055473. The next prime is 1000055521. The reversal of 1000055511 is 1155500001.

1000055511 is a `hidden beast` number, since 100 + 0 + 0 + 55 + 511 = 666.

It is not a de Polignac number, because 1000055511 - 2¹⁰ = 1000054487 is a prime.

It is a super-2 number, since 2×1000055511² = 2000222050162942242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000055521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201055 + ... + 205968.

It is an arithmetic number, because the mean of its divisors is an integer number (56983360).

Almost surely, 2^1000055511 is an apocalyptic number.

1000055511 is a deficient number, since it is larger than the sum of its proper divisors (823412009).

1000055511 is a wasteful number, since it uses less digits than its factorization.

1000055511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407052 (or 407046 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 1000055511 is about 31623.6542954795. The cubic root of 1000055511 is about 1000.0185033243.

Adding to 1000055511 its reverse (1155500001), we get a palindrome (2155555512).

The spelling of 1000055511 in words is "one billion, fifty-five thousand, five hundred eleven".