51285306 has 16 divisors (see below), whose sum is σ = 103225824. Its totient is φ = 16985904.

The previous prime is 51285259. The next prime is 51285343. The reversal of 51285306 is 60358215.

51285306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51285306² = 5260365223027272, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 26280 + ... + 28163.

It is an arithmetic number, because the mean of its divisors is an integer number (6451614).

Almost surely, 2^51285306 is an apocalyptic number.

51285306 is an abundant number, since it is smaller than the sum of its proper divisors (51940518).

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

51285306 is a wasteful number, since it uses less digits than its factorization.

51285306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54605.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51285306 is about 7161.3759851023. The cubic root of 51285306 is about 371.5332190201.

The spelling of 51285306 in words is "fifty-one million, two hundred eighty-five thousand, three hundred six".