51228232556 has 12 divisors (see below), whose sum is σ = 89737912992. Its totient is φ = 25588828848.

The previous prime is 51228232541. The next prime is 51228232571. The reversal of 51228232556 is 65523282215.

It is an interprime number because it is at equal distance from previous prime (51228232541) and next prime (51228232571).

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, 6317300 + ... + 6325403.

It is an arithmetic number, because the mean of its divisors is an integer number (7478159416).

Almost surely, 2^51228232556 is an apocalyptic number.

It is an amenable number.

51228232556 is a deficient number, since it is larger than the sum of its proper divisors (38509680436).

51228232556 is a wasteful number, since it uses less digits than its factorization.

51228232556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643720 (or 12643718 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The spelling of 51228232556 in words is "fifty-one billion, two hundred twenty-eight million, two hundred thirty-two thousand, five hundred fifty-six".