1053403 has 4 divisors (see below), whose sum is σ = 1134448. Its totient is φ = 972360.

The previous prime is 1053401. The next prime is 1053407. The reversal of 1053403 is 3043501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3043501 = 1601 ⋅1901.

It is a cyclic number.

It is not a de Polignac number, because 1053403 - 2¹ = 1053401 is a prime.

It is a super-2 number, since 2×1053403² = 2219315760818, which contains 22 as substring.

It is a Duffinian number.

1053403 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1053401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40503 + ... + 40528.

It is an arithmetic number, because the mean of its divisors is an integer number (283612).

2^1053403 is an apocalyptic number.

1053403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1053403 is a deficient number, since it is larger than the sum of its proper divisors (81045).

1053403 is an equidigital number, since it uses as much as digits as its factorization.

1053403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81044.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1053403 is about 1026.3542273504. The cubic root of 1053403 is about 101.7493203455.

Adding to 1053403 its reverse (3043501), we get a palindrome (4096904).

The spelling of 1053403 in words is "one million, fifty-three thousand, four hundred three".