10505403 has 8 divisors (see below), whose sum is σ = 15563600. Its totient is φ = 7003584.

The previous prime is 10505401. The next prime is 10505413. The reversal of 10505403 is 30450501.

It is not a de Polignac number, because 10505403 - 2¹ = 10505401 is a prime.

It is a super-2 number, since 2×10505403² = 220726984384818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10505401) 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 7 ways as a sum of consecutive naturals, for example, 194518 + ... + 194571.

It is an arithmetic number, because the mean of its divisors is an integer number (1945450).

Almost surely, 2^10505403 is an apocalyptic number.

10505403 is a deficient number, since it is larger than the sum of its proper divisors (5058197).

10505403 is an equidigital number, since it uses as much as digits as its factorization.

10505403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389098 (or 389092 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 10505403 is about 3241.2039429817. The cubic root of 10505403 is about 219.0135101442.

Adding to 10505403 its reverse (30450501), we get a palindrome (40955904).

The spelling of 10505403 in words is "ten million, five hundred five thousand, four hundred three".