1603056 has 80 divisors (see below), whose sum is σ = 5110784. Its totient is φ = 421632.

The previous prime is 1603051. The next prime is 1603057. The reversal of 1603056 is 6503061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603051) 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 15 ways as a sum of consecutive naturals, for example, 4185 + ... + 4551.

2^1603056 is an apocalyptic number.

1603056 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 1603056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2555392).

1603056 is an abundant number, since it is smaller than the sum of its proper divisors (3507728).

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

1603056 is a wasteful number, since it uses less digits than its factorization.

1603056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1603056 is about 1266.1184778685. The cubic root of 1603056 is about 117.0351271544.

The spelling of 1603056 in words is "one million, six hundred three thousand, fifty-six".