51254105204 has 6 divisors (see below), whose sum is σ = 89694684114. Its totient is φ = 25627052600.

The previous prime is 51254105191. The next prime is 51254105209. The reversal of 51254105204 is 40250145215.

It can be written as a sum of positive squares in only one way, i.e., 43870140304 + 7383964900 = 209452^2 + 85930^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51254105209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406763147 + ... + 6406763154.

It is an arithmetic number, because the mean of its divisors is an integer number (14949114019).

Almost surely, 2^51254105204 is an apocalyptic number.

It is an amenable number.

51254105204 is a deficient number, since it is larger than the sum of its proper divisors (38440578910).

51254105204 is a wasteful number, since it uses less digits than its factorization.

51254105204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12813526305 (or 12813526303 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 51254105204 in words is "fifty-one billion, two hundred fifty-four million, one hundred five thousand, two hundred four".