1006505556 has 48 divisors (see below), whose sum is σ = 2749488000. Its totient is φ = 280558080.

The previous prime is 1006505543. The next prime is 1006505569. The reversal of 1006505556 is 6555056001.

It is an interprime number because it is at equal distance from previous prime (1006505543) and next prime (1006505569).

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, 142681 + ... + 149568.

It is an arithmetic number, because the mean of its divisors is an integer number (57281000).

Almost surely, 2^1006505556 is an apocalyptic number.

It is an amenable number.

1006505556 is an abundant number, since it is smaller than the sum of its proper divisors (1742982444).

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

1006505556 is a wasteful number, since it uses less digits than its factorization.

1006505556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292304 (or 292302 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1006505556 is about 31725.4717222613. The cubic root of 1006505556 is about 1002.1638331158.

The spelling of 1006505556 in words is "one billion, six million, five hundred five thousand, five hundred fifty-six".