2053503000 has 192 divisors, whose sum is σ = 7027020000. Its totient is φ = 540806400.

The previous prime is 2053502989. The next prime is 2053503007. The reversal of 2053503000 is 3053502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053503007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 745626 + ... + 748374.

Almost surely, 2^2053503000 is an apocalyptic number.

2053503000 is a gapful number since it is divisible by the number (20) 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 2053503000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3513510000).

2053503000 is an abundant number, since it is smaller than the sum of its proper divisors (4973517000).

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

2053503000 is a wasteful number, since it uses less digits than its factorization.

2053503000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 2053503000 is about 45315.5933426894. The cubic root of 2053503000 is about 1271.0572550571.

Adding to 2053503000 its reverse (3053502), we get a palindrome (2056556502).

The spelling of 2053503000 in words is "two billion, fifty-three million, five hundred three thousand".