1053603 has 12 divisors (see below), whose sum is σ = 1533168. Its totient is φ = 697200.

The previous prime is 1053593. The next prime is 1053617. The reversal of 1053603 is 3063501.

1053603 is a `hidden beast` number, since 10 + 53 + 603 = 666.

It is not a de Polignac number, because 1053603 - 2⁵ = 1053571 is a prime.

It is a super-2 number, since 2×1053603² = 2220158563218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1053103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1153 + ... + 1853.

It is an arithmetic number, because the mean of its divisors is an integer number (127764).

2^1053603 is an apocalyptic number.

1053603 is a deficient number, since it is larger than the sum of its proper divisors (479565).

1053603 is a wasteful number, since it uses less digits than its factorization.

1053603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 1053603 is about 1026.4516549746. The cubic root of 1053603 is about 101.7557593425.

The spelling of 1053603 in words is "one million, fifty-three thousand, six hundred three".