53200544021 has 4 divisors (see below), whose sum is σ = 53209025772. Its totient is φ = 53192062272.

The previous prime is 53200544009. The next prime is 53200544069. The reversal of 53200544021 is 12044500235.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25476628996 + 27723915025 = 159614^2 + 166505^2 .

It is a cyclic number.

It is not a de Polignac number, because 53200544021 - 2³⁰ = 52126802197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53200544081) 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, 4231460 + ... + 4244013.

It is an arithmetic number, because the mean of its divisors is an integer number (13302256443).

Almost surely, 2^53200544021 is an apocalyptic number.

It is an amenable number.

53200544021 is a deficient number, since it is larger than the sum of its proper divisors (8481751).

53200544021 is an equidigital number, since it uses as much as digits as its factorization.

53200544021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481750.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 53200544021 in words is "fifty-three billion, two hundred million, five hundred forty-four thousand, twenty-one".