1011005500 has 24 divisors (see below), whose sum is σ = 2208037104. Its totient is φ = 404402000.

The previous prime is 1011005497. The next prime is 1011005507. The reversal of 1011005500 is 55001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011005507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010506 + ... + 1011505.

It is an arithmetic number, because the mean of its divisors is an integer number (92001546).

Almost surely, 2^1011005500 is an apocalyptic number.

1011005500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011005500 is an abundant number, since it is smaller than the sum of its proper divisors (1197031604).

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

1011005500 is a wasteful number, since it uses less digits than its factorization.

1011005500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022030 (or 2022018 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 1011005500 is about 31796.3126793029. The cubic root of 1011005500 is about 1003.6551237927.

Adding to 1011005500 its reverse (55001101), we get a palindrome (1066006601).

The spelling of 1011005500 in words is "one billion, eleven million, five thousand, five hundred".