51706394 has 8 divisors (see below), whose sum is σ = 77927808. Its totient is φ = 25730460.

The previous prime is 51706337. The next prime is 51706397. The reversal of 51706394 is 49360715.

51706394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (51706397) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 60842 + ... + 61685.

It is an arithmetic number, because the mean of its divisors is an integer number (9740976).

Almost surely, 2^51706394 is an apocalyptic number.

51706394 is a deficient number, since it is larger than the sum of its proper divisors (26221414).

51706394 is a wasteful number, since it uses less digits than its factorization.

51706394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122740.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 51706394 is about 7190.7158197220. The cubic root of 51706394 is about 372.5472972689.

The spelling of 51706394 in words is "fifty-one million, seven hundred six thousand, three hundred ninety-four".