1000550111 has 4 divisors (see below), whose sum is σ = 1091509224. Its totient is φ = 909591000.

The previous prime is 1000550093. The next prime is 1000550119. The reversal of 1000550111 is 1110550001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1110550001 = 11 ⋅100959091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000550111 is a prime.

It is a super-2 number, since 2×1000550111² = 2002201049244224642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000550119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45479540 + ... + 45479561.

It is an arithmetic number, because the mean of its divisors is an integer number (272877306).

Almost surely, 2^1000550111 is an apocalyptic number.

1000550111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1000550111 is a deficient number, since it is larger than the sum of its proper divisors (90959113).

1000550111 is an equidigital number, since it uses as much as digits as its factorization.

1000550111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90959112.

The product of its (nonzero) digits is 25, while the sum is 14.

The square root of 1000550111 is about 31631.4734244233. The cubic root of 1000550111 is about 1000.1833367189.

The spelling of 1000550111 in words is "one billion, five hundred fifty thousand, one hundred eleven".