53728603 has 4 divisors (see below), whose sum is σ = 53764128. Its totient is φ = 53693080.

The previous prime is 53728579. The next prime is 53728613. The reversal of 53728603 is 30682735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30682735 = 5 ⋅6136547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53728603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53728613) 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, 15388 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (13441032).

Almost surely, 2^53728603 is an apocalyptic number.

53728603 is a deficient number, since it is larger than the sum of its proper divisors (35525).

53728603 is a wasteful number, since it uses less digits than its factorization.

53728603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35524.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 53728603 is about 7329.9797407633. The cubic root of 53728603 is about 377.3420311820.

The spelling of 53728603 in words is "fifty-three million, seven hundred twenty-eight thousand, six hundred three".