1055220056 has 64 divisors (see below), whose sum is σ = 2293349760. Its totient is φ = 449856000.

The previous prime is 1055220041. The next prime is 1055220097. The reversal of 1055220056 is 6500225501.

It is a super-2 number, since 2×1055220056² = 2226978733169286272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 494111 + ... + 496241.

It is an arithmetic number, because the mean of its divisors is an integer number (35833590).

Almost surely, 2^1055220056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055220056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146674880).

1055220056 is an abundant number, since it is smaller than the sum of its proper divisors (1238129704).

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

1055220056 is a wasteful number, since it uses less digits than its factorization.

1055220056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 2492 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1055220056 is about 32484.1508431420. The cubic root of 1055220056 is about 1018.0779053218.

Adding to 1055220056 its reverse (6500225501), we get a palindrome (7555445557).

Subtracting 1055220056 from its reverse (6500225501), we obtain a palindrome (5445005445).

The spelling of 1055220056 in words is "one billion, fifty-five million, two hundred twenty thousand, fifty-six".