51556050 has 144 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 10869120.

The previous prime is 51556049. The next prime is 51556061. The reversal of 51556050 is 5065515.

51556050 is a `hidden beast` number, since 5 + 1 + 55 + 605 + 0 = 666.

51556050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 71 ways as a sum of consecutive naturals, for example, 40321 + ... + 41579.

It is an arithmetic number, because the mean of its divisors is an integer number (1184820).

Almost surely, 2^51556050 is an apocalyptic number.

51556050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51556050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85307040).

51556050 is an abundant number, since it is smaller than the sum of its proper divisors (119058030).

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

51556050 is a wasteful number, since it uses less digits than its factorization.

51556050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1289 counting only the distinct ones).

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

The square root of 51556050 is about 7180.2541737741. The cubic root of 51556050 is about 372.1858679213.

It can be divided in two parts, 515 and 56050, that added together give a palindrome (56565).

The spelling of 51556050 in words is "fifty-one million, five hundred fifty-six thousand, fifty".