51682805 has 8 divisors (see below), whose sum is σ = 65667672. Its totient is φ = 38914048.

The previous prime is 51682801. The next prime is 51682823. The reversal of 51682805 is 50828615.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6832996 + 44849809 = 2614^2 + 6697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51682805 - 2² = 51682801 is a prime.

It is a super-2 number, since 2×51682805² = 5342224665336050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51682801) 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, 303932 + ... + 304101.

It is an arithmetic number, because the mean of its divisors is an integer number (8208459).

Almost surely, 2^51682805 is an apocalyptic number.

It is an amenable number.

51682805 is a deficient number, since it is larger than the sum of its proper divisors (13984867).

51682805 is a wasteful number, since it uses less digits than its factorization.

51682805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608055.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 51682805 is about 7189.0753925661. The cubic root of 51682805 is about 372.4906353215.

The spelling of 51682805 in words is "fifty-one million, six hundred eighty-two thousand, eight hundred five".