51988416253 has 4 divisors (see below), whose sum is σ = 51990404508. Its totient is φ = 51986428000.

The previous prime is 51988416241. The next prime is 51988416269. The reversal of 51988416253 is 35261488915.

It is a happy number.

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 12579416964 + 39408999289 = 112158^2 + 198517^2 .

It is a cyclic number.

It is not a de Polignac number, because 51988416253 - 2⁹ = 51988415741 is a prime.

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 51988416253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51988416653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954376 + ... + 1007377.

It is an arithmetic number, because the mean of its divisors is an integer number (12997601127).

Almost surely, 2^51988416253 is an apocalyptic number.

It is an amenable number.

51988416253 is a deficient number, since it is larger than the sum of its proper divisors (1988255).

51988416253 is a wasteful number, since it uses less digits than its factorization.

51988416253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988254.

The product of its digits is 2073600, while the sum is 52.

The spelling of 51988416253 in words is "fifty-one billion, nine hundred eighty-eight million, four hundred sixteen thousand, two hundred fifty-three".