53421003 has 6 divisors (see below), whose sum is σ = 77163684. Its totient is φ = 35613996.

The previous prime is 53420963. The next prime is 53421013. The reversal of 53421003 is 30012435.

It is not a de Polignac number, because 53421003 - 2⁸ = 53420747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53421013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2967825 + ... + 2967842.

It is an arithmetic number, because the mean of its divisors is an integer number (12860614).

Almost surely, 2^53421003 is an apocalyptic number.

53421003 is a deficient number, since it is larger than the sum of its proper divisors (23742681).

53421003 is a wasteful number, since it uses less digits than its factorization.

53421003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5935673 (or 5935670 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53421003 is about 7308.9673005152. The cubic root of 53421003 is about 376.6205494308.

Adding to 53421003 its reverse (30012435), we get a palindrome (83433438).

The spelling of 53421003 in words is "fifty-three million, four hundred twenty-one thousand, three".