51803545477 has 8 divisors (see below), whose sum is σ = 54893721600. Its totient is φ = 48718137024.

The previous prime is 51803545463. The next prime is 51803545481. The reversal of 51803545477 is 77454530815.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51803545477 is a prime.

It is a super-3 number, since 3×51803545477³ (a number of 33 digits) contains 333 as substring.

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 51803545477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51803545777) 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, 1169527 + ... + 1213012.

It is an arithmetic number, because the mean of its divisors is an integer number (6861715200).

Almost surely, 2^51803545477 is an apocalyptic number.

It is an amenable number.

51803545477 is a deficient number, since it is larger than the sum of its proper divisors (3090176123).

51803545477 is a wasteful number, since it uses less digits than its factorization.

51803545477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383835.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 51803545477 in words is "fifty-one billion, eight hundred three million, five hundred forty-five thousand, four hundred seventy-seven".