1000551000 has 64 divisors (see below), whose sum is σ = 3121728480. Its totient is φ = 266812800.

The previous prime is 1000550977. The next prime is 1000551049. The reversal of 1000551000 is 1550001.

1000551000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1000551000² = 2002204607202000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163759 + ... + 169758.

Almost surely, 2^1000551000 is an apocalyptic number.

1000551000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000551000 is an abundant number, since it is smaller than the sum of its proper divisors (2121177480).

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

1000551000 is a wasteful number, since it uses less digits than its factorization.

1000551000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333541 (or 333527 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 1000551000 is about 31631.4874768797. The cubic root of 1000551000 is about 1000.1836329435.

Subtracting from 1000551000 its reverse (1550001), we obtain a palindrome (999000999).

The spelling of 1000551000 in words is "one billion, five hundred fifty-one thousand".