53515821242 has 16 divisors (see below), whose sum is σ = 86618495880. Its totient is φ = 24651077952.

The previous prime is 53515821241. The next prime is 53515821257. The reversal of 53515821242 is 24212851535.

53515821242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 50602952401 + 2912868841 = 224951^2 + 53971^2 .

It is a super-3 number, since 3×53515821242³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53515821196 and 53515821205.

It is not an unprimeable number, because it can be changed into a prime (53515821241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008673 + ... + 2035140.

Almost surely, 2^53515821242 is an apocalyptic number.

53515821242 is a deficient number, since it is larger than the sum of its proper divisors (33102674638).

53515821242 is a wasteful number, since it uses less digits than its factorization.

53515821242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044337.

The product of its digits is 96000, while the sum is 38.

The spelling of 53515821242 in words is "fifty-three billion, five hundred fifteen million, eight hundred twenty-one thousand, two hundred forty-two".