1005550506 has 48 divisors (see below), whose sum is σ = 2207668320.
Its totient is φ = 330752160.
The previous prime is 1005550499. The next prime is 1005550519. The reversal of 1005550506 is 6050555001.
1005550506 is a `hidden beast` number, since 100 + 5 + 5 + 50 + 506 = 666.
It is a super-2 number, since 2×10055505062 = 2022263640233712072, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1005550506.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554341 + ... + 556151.
It is an arithmetic number, because the mean of its divisors is an integer number (45993090).
Almost surely, 21005550506 is an apocalyptic number.
1005550506 is an abundant number, since it is smaller than the sum of its proper divisors (1202117814).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1005550506 is a wasteful number, since it uses less digits than its factorization.
1005550506 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2211 (or 2208 counting only the distinct ones).
The product of its (nonzero) digits is 3750, while the sum is 27.
The square root of 1005550506 is about 31710.4163643431.
The cubic root of 1005550506 is about 1001.8467560593.
The spelling of 1005550506 in words is "one billion, five million, five hundred fifty thousand, five hundred six".