52420654081 has 4 divisors (see below), whose sum is σ = 52433089092. Its totient is φ = 52408219072.

The previous prime is 52420654073. The next prime is 52420654087. The reversal of 52420654081 is 18045602425.

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 49443969600 + 2976684481 = 222360^2 + 54559^2 .

It is a cyclic number.

It is not a de Polignac number, because 52420654081 - 2³ = 52420654073 is a prime.

It is a super-2 number, since 2×52420654081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52420654081.

It is not an unprimeable number, because it can be changed into a prime (52420654087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6211180 + ... + 6219613.

It is an arithmetic number, because the mean of its divisors is an integer number (13108272273).

Almost surely, 2^52420654081 is an apocalyptic number.

It is an amenable number.

52420654081 is a deficient number, since it is larger than the sum of its proper divisors (12435011).

52420654081 is a wasteful number, since it uses less digits than its factorization.

52420654081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435010.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 52420654081 in words is "fifty-two billion, four hundred twenty million, six hundred fifty-four thousand, eighty-one".