51164785 has 8 divisors (see below), whose sum is σ = 70168896. Its totient is φ = 35084400.

The previous prime is 51164779. The next prime is 51164791. The reversal of 51164785 is 58746115.

51164785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51164779) and next prime (51164791).

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

It is not a de Polignac number, because 51164785 - 2⁵ = 51164753 is a prime.

It is an unprimeable number.

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, 730891 + ... + 730960.

It is an arithmetic number, because the mean of its divisors is an integer number (8771112).

Almost surely, 2^51164785 is an apocalyptic number.

It is an amenable number.

51164785 is a deficient number, since it is larger than the sum of its proper divisors (19004111).

51164785 is a wasteful number, since it uses less digits than its factorization.

51164785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461863.

The product of its digits is 33600, while the sum is 37.

The square root of 51164785 is about 7152.9563818047. The cubic root of 51164785 is about 371.2419551061.

It can be divided in two parts, 51 and 164785, that added together give a square (164836 = 406²).

The spelling of 51164785 in words is "fifty-one million, one hundred sixty-four thousand, seven hundred eighty-five".