1056144445 has 4 divisors (see below), whose sum is σ = 1267373340. Its totient is φ = 844915552.

The previous prime is 1056144433. The next prime is 1056144451. The reversal of 1056144445 is 5444416501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5444416501 = 113 ⋅48180677.

It can be written as a sum of positive squares in 2 ways, for example, as 250209124 + 805935321 = 15818^2 + 28389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056144445 - 2¹⁷ = 1056013373 is a prime.

It is a super-2 number, since 2×1056144445² = 2230882177408716050, 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 1056144445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105614440 + ... + 105614449.

It is an arithmetic number, because the mean of its divisors is an integer number (316843335).

Almost surely, 2^1056144445 is an apocalyptic number.

It is an amenable number.

1056144445 is a deficient number, since it is larger than the sum of its proper divisors (211228895).

1056144445 is an equidigital number, since it uses as much as digits as its factorization.

1056144445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211228894.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 1056144445 is about 32498.3760363499. The cubic root of 1056144445 is about 1018.3751025238.

The spelling of 1056144445 in words is "one billion, fifty-six million, one hundred forty-four thousand, four hundred forty-five".