1020555216 has 60 divisors (see below), whose sum is σ = 2948283520. Its totient is φ = 329209920.

The previous prime is 1020555197. The next prime is 1020555233. The reversal of 1020555216 is 6125550201.

1020555216 is a `hidden beast` number, since 102 + 0 + 5 + 552 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1020555216.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109846 + ... + 118773.

Almost surely, 2^1020555216 is an apocalyptic number.

1020555216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1020555216 is an abundant number, since it is smaller than the sum of its proper divisors (1927728304).

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

1020555216 is a wasteful number, since it uses less digits than its factorization.

1020555216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228664 (or 228655 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1020555216 is about 31946.1299064535. The cubic root of 1020555216 is about 1006.8053212129.

The spelling of 1020555216 in words is "one billion, twenty million, five hundred fifty-five thousand, two hundred sixteen".