51085306 has 16 divisors (see below), whose sum is σ = 81368064. Its totient is φ = 23971264.

The previous prime is 51085301. The next prime is 51085313. The reversal of 51085306 is 60358015.

It is a super-2 number, since 2×51085306² = 5219416978227272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51085301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11061 + ... + 14983.

It is an arithmetic number, because the mean of its divisors is an integer number (5085504).

Almost surely, 2^51085306 is an apocalyptic number.

51085306 is a deficient number, since it is larger than the sum of its proper divisors (30282758).

51085306 is a wasteful number, since it uses less digits than its factorization.

51085306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51085306 is about 7147.3985477235. The cubic root of 51085306 is about 371.0496273124.

The spelling of 51085306 in words is "fifty-one million, eighty-five thousand, three hundred six".