53165603 has 4 divisors (see below), whose sum is σ = 53713800. Its totient is φ = 52617408.

The previous prime is 53165599. The next prime is 53165611. The reversal of 53165603 is 30656135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53165603 - 2² = 53165599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53165003) 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, 273953 + ... + 274146.

It is an arithmetic number, because the mean of its divisors is an integer number (13428450).

Almost surely, 2^53165603 is an apocalyptic number.

53165603 is a deficient number, since it is larger than the sum of its proper divisors (548197).

53165603 is an equidigital number, since it uses as much as digits as its factorization.

53165603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548196.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 53165603 is about 7291.4746793773. The cubic root of 53165603 is about 376.0193964454.

The spelling of 53165603 in words is "fifty-three million, one hundred sixty-five thousand, six hundred three".