1056520 has 32 divisors (see below), whose sum is σ = 2421720. Its totient is φ = 414720.

The previous prime is 1056509. The next prime is 1056521. The reversal of 1056520 is 256501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 320356 + 736164 = 566^2 + 858^2 .

It is a super-2 number, since 2×1056520² = 2232469020800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224 + ... + 2656.

2^1056520 is an apocalyptic number.

1056520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1056520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210860).

1056520 is an abundant number, since it is smaller than the sum of its proper divisors (1365200).

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

1056520 is a wasteful number, since it uses less digits than its factorization.

1056520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1056520 is about 1027.8715873104. The cubic root of 1056520 is about 101.8495796412.

Subtracting from 1056520 its sum of digits (19), we obtain a palindrome (1056501).

It can be divided in two parts, 10565 and 20, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 1056520 in words is "one million, fifty-six thousand, five hundred twenty".