2053403 has 16 divisors (see below), whose sum is σ = 2388960. Its totient is φ = 1747200.

The previous prime is 2053397. The next prime is 2053411. The reversal of 2053403 is 3043502.

2053403 = 27² + 28² + ... + 183².

It is a cyclic number.

It is not a de Polignac number, because 2053403 - 2⁶ = 2053339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13001 + ... + 13157.

It is an arithmetic number, because the mean of its divisors is an integer number (149310).

2^2053403 is an apocalyptic number.

2053403 is a deficient number, since it is larger than the sum of its proper divisors (335557).

2053403 is a wasteful number, since it uses less digits than its factorization.

2053403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 2053403 is about 1432.9699927075. The cubic root of 2053403 is about 127.1036622381.

Adding to 2053403 its reverse (3043502), we get a palindrome (5096905).

Subtracting 2053403 from its reverse (3043502), we obtain a palindrome (990099).

The spelling of 2053403 in words is "two million, fifty-three thousand, four hundred three".