53265546421 has 4 divisors (see below), whose sum is σ = 53736923052. Its totient is φ = 52794169792.

The previous prime is 53265546407. The next prime is 53265546437. The reversal of 53265546421 is 12464556235.

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 4552200900 + 48713345521 = 67470^2 + 220711^2 .

It is a cyclic number.

It is not a de Polignac number, because 53265546421 - 2⁹ = 53265545909 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 (53265546401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235688146 + ... + 235688371.

It is an arithmetic number, because the mean of its divisors is an integer number (13434230763).

Almost surely, 2^53265546421 is an apocalyptic number.

It is an amenable number.

53265546421 is a deficient number, since it is larger than the sum of its proper divisors (471376631).

53265546421 is a wasteful number, since it uses less digits than its factorization.

53265546421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471376630.

The product of its digits is 864000, while the sum is 43.

The spelling of 53265546421 in words is "fifty-three billion, two hundred sixty-five million, five hundred forty-six thousand, four hundred twenty-one".