51515510556552 has 32 divisors (see below), whose sum is σ = 147187173019200. Its totient is φ = 14718717301824.

The previous prime is 51515510556541. The next prime is 51515510556557. The reversal of 51515510556552 is 25565501551515.

51515510556552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51515510556495 and 51515510556504.

It is not an unprimeable number, because it can be changed into a prime (51515510556557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153319971727 + ... + 153319972062.

It is an arithmetic number, because the mean of its divisors is an integer number (4599599156850).

Almost surely, 2^{51515510556552} is an apocalyptic number.

It is an amenable number.

51515510556552 is an abundant number, since it is smaller than the sum of its proper divisors (95671662462648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51515510556552 is a wasteful number, since it uses less digits than its factorization.

51515510556552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306639943805 (or 306639943801 counting only the distinct ones).

The product of its (nonzero) digits is 4687500, while the sum is 51.

The spelling of 51515510556552 in words is "fifty-one trillion, five hundred fifteen billion, five hundred ten million, five hundred fifty-six thousand, five hundred fifty-two".