51989800253 has 2 divisors, whose sum is σ = 51989800254. Its totient is φ = 51989800252.

The previous prime is 51989800217. The next prime is 51989800267. The reversal of 51989800253 is 35200898915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51891928804 + 97871449 = 227798^2 + 9893^2 .

It is a cyclic number.

It is not a de Polignac number, because 51989800253 - 2¹⁰ = 51989799229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51989800153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25994900126 + 25994900127.

It is an arithmetic number, because the mean of its divisors is an integer number (25994900127).

Almost surely, 2^51989800253 is an apocalyptic number.

It is an amenable number.

51989800253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51989800253 is an equidigital number, since it uses as much as digits as its factorization.

51989800253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 51989800253 in words is "fifty-one billion, nine hundred eighty-nine million, eight hundred thousand, two hundred fifty-three".