51366785 has 8 divisors (see below), whose sum is σ = 64884480. Its totient is φ = 38930544.

The previous prime is 51366781. The next prime is 51366787. The reversal of 51366785 is 58766315.

51366785 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 a de Polignac number, because 51366785 - 2² = 51366781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51366781) 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 7 ways as a sum of consecutive naturals, for example, 270257 + ... + 270446.

It is an arithmetic number, because the mean of its divisors is an integer number (8110560).

Almost surely, 2^51366785 is an apocalyptic number.

It is an amenable number.

51366785 is a deficient number, since it is larger than the sum of its proper divisors (13517695).

51366785 is a wasteful number, since it uses less digits than its factorization.

51366785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540727.

The product of its digits is 151200, while the sum is 41.

The square root of 51366785 is about 7167.0625084479. The cubic root of 51366785 is about 371.7298714346.

The spelling of 51366785 in words is "fifty-one million, three hundred sixty-six thousand, seven hundred eighty-five".