52987824121 has 4 divisors (see below), whose sum is σ = 54814990500. Its totient is φ = 51160657744.

The previous prime is 52987824083. The next prime is 52987824137. The reversal of 52987824121 is 12142878925.

It is a happy number.

52987824121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 36945068521 + 16042755600 = 192211^2 + 126660^2 .

It is a cyclic number.

It is not a de Polignac number, because 52987824121 - 2¹³ = 52987815929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52987324121) 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, 913583146 + ... + 913583203.

It is an arithmetic number, because the mean of its divisors is an integer number (13703747625).

Almost surely, 2^52987824121 is an apocalyptic number.

It is an amenable number.

52987824121 is a deficient number, since it is larger than the sum of its proper divisors (1827166379).

52987824121 is a wasteful number, since it uses less digits than its factorization.

52987824121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827166378.

The product of its digits is 645120, while the sum is 49.

The spelling of 52987824121 in words is "fifty-two billion, nine hundred eighty-seven million, eight hundred twenty-four thousand, one hundred twenty-one".