1056564440 has 16 divisors (see below), whose sum is σ = 2377270080. Its totient is φ = 422625760.

The previous prime is 1056564403. The next prime is 1056564461. The reversal of 1056564440 is 444656501.

It is a super-2 number, since 2×1056564440² = 2232656831745027200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056564440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13207016 + ... + 13207095.

It is an arithmetic number, because the mean of its divisors is an integer number (148579380).

Almost surely, 2^1056564440 is an apocalyptic number.

1056564440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056564440 is an abundant number, since it is smaller than the sum of its proper divisors (1320705640).

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

1056564440 is a wasteful number, since it uses less digits than its factorization.

1056564440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26414122 (or 26414118 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 1056564440 is about 32504.8371784878. The cubic root of 1056564440 is about 1018.5100764123.

The spelling of 1056564440 in words is "one billion, fifty-six million, five hundred sixty-four thousand, four hundred forty".