53042403 has 8 divisors (see below), whose sum is σ = 70976016. Its totient is φ = 35235200.

The previous prime is 53042401. The next prime is 53042441. The reversal of 53042403 is 30424035.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53042403 - 2¹ = 53042401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53042403.

It is not an unprimeable number, because it can be changed into a prime (53042401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30618 + ... + 32303.

It is an arithmetic number, because the mean of its divisors is an integer number (8872002).

Almost surely, 2^53042403 is an apocalyptic number.

53042403 is a deficient number, since it is larger than the sum of its proper divisors (17933613).

53042403 is a wasteful number, since it uses less digits than its factorization.

53042403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63205.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 53042403 is about 7283.0215570188. The cubic root of 53042403 is about 375.7287234263.

Adding to 53042403 its reverse (30424035), we get a palindrome (83466438).

The spelling of 53042403 in words is "fifty-three million, forty-two thousand, four hundred three".