51456222556 has 12 divisors (see below), whose sum is σ = 91060169760. Its totient is φ = 25439031200.

The previous prime is 51456222547. The next prime is 51456222563. The reversal of 51456222556 is 65522265415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72269620 + ... + 72270331.

It is an arithmetic number, because the mean of its divisors is an integer number (7588347480).

Almost surely, 2^51456222556 is an apocalyptic number.

It is an amenable number.

51456222556 is a deficient number, since it is larger than the sum of its proper divisors (39603947204).

51456222556 is a wasteful number, since it uses less digits than its factorization.

51456222556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144540044 (or 144540042 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The spelling of 51456222556 in words is "fifty-one billion, four hundred fifty-six million, two hundred twenty-two thousand, five hundred fifty-six".