51712805 has 8 divisors (see below), whose sum is σ = 64057344. Its totient is φ = 40035600.

The previous prime is 51712799. The next prime is 51712877. The reversal of 51712805 is 50821715.

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

It is not a de Polignac number, because 51712805 - 2⁶ = 51712741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166661 + ... + 166970.

It is an arithmetic number, because the mean of its divisors is an integer number (8007168).

Almost surely, 2^51712805 is an apocalyptic number.

It is an amenable number.

51712805 is a deficient number, since it is larger than the sum of its proper divisors (12344539).

51712805 is a wasteful number, since it uses less digits than its factorization.

51712805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333667.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51712805 is about 7191.1615890620. The cubic root of 51712805 is about 372.5626938304.

The spelling of 51712805 in words is "fifty-one million, seven hundred twelve thousand, eight hundred five".