1056566550 has 96 divisors (see below), whose sum is σ = 2864316672. Its totient is φ = 256164480.

The previous prime is 1056566531. The next prime is 1056566551. The reversal of 1056566550 is 556656501.

It is a super-2 number, since 2×1056566550² = 2232665749157805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1056566499 and 1056566508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056566551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126607 + ... + 134693.

It is an arithmetic number, because the mean of its divisors is an integer number (29836632).

Almost surely, 2^1056566550 is an apocalyptic number.

1056566550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1056566550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432158336).

1056566550 is an abundant number, since it is smaller than the sum of its proper divisors (1807750122).

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

1056566550 is a wasteful number, since it uses less digits than its factorization.

1056566550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182 (or 8177 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 1056566550 is about 32504.8696351793. The cubic root of 1056566550 is about 1018.5107544132.

The spelling of 1056566550 in words is "one billion, fifty-six million, five hundred sixty-six thousand, five hundred fifty".