1056244405 has 4 divisors (see below), whose sum is σ = 1267493292. Its totient is φ = 844995520.

The previous prime is 1056244403. The next prime is 1056244411. The reversal of 1056244405 is 5044426501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5044426501 = 3217 ⋅1568053.

It can be written as a sum of positive squares in 2 ways, for example, as 464100849 + 592143556 = 21543^2 + 24334^2 .

It is not a de Polignac number, because 1056244405 - 2¹ = 1056244403 is a prime.

It is a super-2 number, since 2×1056244405² = 2231304486187608050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056244403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105624436 + ... + 105624445.

It is an arithmetic number, because the mean of its divisors is an integer number (316873323).

Almost surely, 2^1056244405 is an apocalyptic number.

It is an amenable number.

1056244405 is a deficient number, since it is larger than the sum of its proper divisors (211248887).

1056244405 is an equidigital number, since it uses as much as digits as its factorization.

1056244405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211248886.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1056244405 is about 32499.9139229629. The cubic root of 1056244405 is about 1018.4072299360.

The spelling of 1056244405 in words is "one billion, fifty-six million, two hundred forty-four thousand, four hundred five".