53998521485 has 8 divisors (see below), whose sum is σ = 64809430776. Its totient is φ = 43191347200.

The previous prime is 53998521413. The next prime is 53998521487. The reversal of 53998521485 is 58412589935.

It can be written as a sum of positive squares in 4 ways, for example, as 7399096324 + 46599425161 = 86018^2 + 215869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-53998521485 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 (53998521487) 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 7 ways as a sum of consecutive naturals, for example, 901844 + ... + 959853.

It is an arithmetic number, because the mean of its divisors is an integer number (8101178847).

Almost surely, 2^53998521485 is an apocalyptic number.

It is an amenable number.

53998521485 is a deficient number, since it is larger than the sum of its proper divisors (10810909291).

53998521485 is a wasteful number, since it uses less digits than its factorization.

53998521485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867503.

The product of its digits is 15552000, while the sum is 59.

The spelling of 53998521485 in words is "fifty-three billion, nine hundred ninety-eight million, five hundred twenty-one thousand, four hundred eighty-five".