1503445056 has 56 divisors (see below), whose sum is σ = 3987149760. Its totient is φ = 499978752.

The previous prime is 1503445051. The next prime is 1503445061. The reversal of 1503445056 is 6505443051.

It is an interprime number because it is at equal distance from previous prime (1503445051) and next prime (1503445061).

It is not an unprimeable number, because it can be changed into a prime (1503445051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75370 + ... + 93206.

Almost surely, 2^1503445056 is an apocalyptic number.

1503445056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1503445056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993574880).

1503445056 is an abundant number, since it is smaller than the sum of its proper divisors (2483704704).

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

1503445056 is a wasteful number, since it uses less digits than its factorization.

1503445056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18291 (or 18281 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1503445056 is about 38774.2834363190. The cubic root of 1503445056 is about 1145.5899290907.

The spelling of 1503445056 in words is "one billion, five hundred three million, four hundred forty-five thousand, fifty-six".