51553385546 has 8 divisors (see below), whose sum is σ = 83278545924. Its totient is φ = 23793870240.

The previous prime is 51553385531. The next prime is 51553385591. The reversal of 51553385546 is 64558335515.

It can be written as a sum of positive squares in 2 ways, for example, as 51087300625 + 466084921 = 226025^2 + 21589^2 .

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

It is a super-2 number, since 2×51553385546² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51553385494 and 51553385503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991411235 + ... + 991411286.

Almost surely, 2^51553385546 is an apocalyptic number.

51553385546 is a deficient number, since it is larger than the sum of its proper divisors (31725160378).

51553385546 is a wasteful number, since it uses less digits than its factorization.

51553385546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982822536.

The product of its digits is 5400000, while the sum is 50.

The spelling of 51553385546 in words is "fifty-one billion, five hundred fifty-three million, three hundred eighty-five thousand, five hundred forty-six".