51555060 has 72 divisors (see below), whose sum is σ = 160631016. Its totient is φ = 13374720.

The previous prime is 51555047. The next prime is 51555089. The reversal of 51555060 is 6055515.

51555060 is a `hidden beast` number, since 5 + 155 + 506 + 0 = 666.

51555060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7518564 + 44036496 = 2742^2 + 6636^2 .

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2790 + ... + 10530.

Almost surely, 2^51555060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51555060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80315508).

51555060 is an abundant number, since it is smaller than the sum of its proper divisors (109075956).

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

51555060 is a wasteful number, since it uses less digits than its factorization.

51555060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793 (or 7788 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 51555060 is about 7180.1852343794. The cubic root of 51555060 is about 372.1834856185.

The spelling of 51555060 in words is "fifty-one million, five hundred fifty-five thousand, sixty".