1056156503 has 8 divisors (see below), whose sum is σ = 1068927840. Its totient is φ = 1043405440.

The previous prime is 1056156461. The next prime is 1056156509. The reversal of 1056156503 is 3056516501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1056156503 - 2⁸ = 1056156247 is a prime.

It is a super-2 number, since 2×1056156503² = 2230933117658378018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056156503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056156509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117323 + ... + 126003.

It is an arithmetic number, because the mean of its divisors is an integer number (133615980).

Almost surely, 2^1056156503 is an apocalyptic number.

1056156503 is a deficient number, since it is larger than the sum of its proper divisors (12771337).

1056156503 is an equidigital number, since it uses as much as digits as its factorization.

1056156503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1056156503 is about 32498.5615527826. The cubic root of 1056156503 is about 1018.3789781049.

The spelling of 1056156503 in words is "one billion, fifty-six million, one hundred fifty-six thousand, five hundred three".