1056503143 has 4 divisors (see below), whose sum is σ = 1085057320. Its totient is φ = 1027948968.

The previous prime is 1056503141. The next prime is 1056503153. The reversal of 1056503143 is 3413056501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1056503143 - 2¹ = 1056503141 is a prime.

It is a super-2 number, since 2×1056503143² = 2232397782337756898, 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 (1056503141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14277033 + ... + 14277106.

It is an arithmetic number, because the mean of its divisors is an integer number (271264330).

Almost surely, 2^1056503143 is an apocalyptic number.

1056503143 is a deficient number, since it is larger than the sum of its proper divisors (28554177).

1056503143 is an equidigital number, since it uses as much as digits as its factorization.

1056503143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28554176.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1056503143 is about 32503.8942743789. The cubic root of 1056503143 is about 1018.4903796110.

Adding to 1056503143 its reverse (3413056501), we get a palindrome (4469559644).

The spelling of 1056503143 in words is "one billion, fifty-six million, five hundred three thousand, one hundred forty-three".