51553385545 has 16 divisors (see below), whose sum is σ = 62152174080. Its totient is φ = 41050929600.

The previous prime is 51553385531. The next prime is 51553385591. The reversal of 51553385545 is 54558335515.

It is not a de Polignac number, because 51553385545 - 2²⁷ = 51419167817 is a prime.

It is a super-2 number, since 2×51553385545² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1430700 + ... + 1466290.

It is an arithmetic number, because the mean of its divisors is an integer number (3884510880).

Almost surely, 2^51553385545 is an apocalyptic number.

It is an amenable number.

51553385545 is a deficient number, since it is larger than the sum of its proper divisors (10598788535).

51553385545 is a wasteful number, since it uses less digits than its factorization.

51553385545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36936.

The product of its digits is 4500000, while the sum is 49.

The spelling of 51553385545 in words is "fifty-one billion, five hundred fifty-three million, three hundred eighty-five thousand, five hundred forty-five".