53005603 has 12 divisors (see below), whose sum is σ = 62444640. Its totient is φ = 44854992.

The previous prime is 53005577. The next prime is 53005621. The reversal of 53005603 is 30650035.

It is not a de Polignac number, because 53005603 - 2⁹ = 53005091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53005663) 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, 2976 + ... + 10717.

It is an arithmetic number, because the mean of its divisors is an integer number (5203720).

Almost surely, 2^53005603 is an apocalyptic number.

53005603 is a deficient number, since it is larger than the sum of its proper divisors (9439037).

53005603 is a wasteful number, since it uses less digits than its factorization.

53005603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13786 (or 13779 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 53005603 is about 7280.4946947306. The cubic root of 53005603 is about 375.6418117287.

Adding to 53005603 its reverse (30650035), we get a palindrome (83655638).

The spelling of 53005603 in words is "fifty-three million, five thousand, six hundred three".