51510204551 has 8 divisors (see below), whose sum is σ = 55751287200. Its totient is φ = 47308944672.

The previous prime is 51510204517. The next prime is 51510204583. The reversal of 51510204551 is 15540201515.

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 51510204551 - 2³⁴ = 34330335367 is a prime.

It is a super-2 number, since 2×51510204551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51510204751) 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 in 7 ways as a sum of consecutive naturals, for example, 9953000 + ... + 9958173.

It is an arithmetic number, because the mean of its divisors is an integer number (6968910900).

Almost surely, 2^51510204551 is an apocalyptic number.

51510204551 is a deficient number, since it is larger than the sum of its proper divisors (4241082649).

51510204551 is a wasteful number, since it uses less digits than its factorization.

51510204551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19911385.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 51510204551 in words is "fifty-one billion, five hundred ten million, two hundred four thousand, five hundred fifty-one".