51550670251 has 8 divisors (see below), whose sum is σ = 53498666880. Its totient is φ = 49614032832.

The previous prime is 51550670219. The next prime is 51550670299. The reversal of 51550670251 is 15207605515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51550670251 - 2⁵ = 51550670219 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 51550670251.

It is not an unprimeable number, because it can be changed into a prime (51550670051) 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, 2830555 + ... + 2848708.

It is an arithmetic number, because the mean of its divisors is an integer number (6687333360).

Almost surely, 2^51550670251 is an apocalyptic number.

51550670251 is a deficient number, since it is larger than the sum of its proper divisors (1947996629).

51550670251 is a wasteful number, since it uses less digits than its factorization.

51550670251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679605.

The product of its (nonzero) digits is 52500, while the sum is 37.

It can be divided in two parts, 51550 and 670251, that added together give a triangular number (721801 = T₁₂₀₁).

The spelling of 51550670251 in words is "fifty-one billion, five hundred fifty million, six hundred seventy thousand, two hundred fifty-one".