51043385 has 8 divisors (see below), whose sum is σ = 61299720. Its totient is φ = 40802944.

The previous prime is 51043381. The next prime is 51043411. The reversal of 51043385 is 58334015.

51043385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12752041 + 38291344 = 3571^2 + 6188^2 .

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 51043385 - 2² = 51043381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51043381) 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, 4901 + ... + 11229.

It is an arithmetic number, because the mean of its divisors is an integer number (7662465).

Almost surely, 2^51043385 is an apocalyptic number.

It is an amenable number.

51043385 is a deficient number, since it is larger than the sum of its proper divisors (10256335).

51043385 is a wasteful number, since it uses less digits than its factorization.

51043385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 51043385 is about 7144.4653403876. The cubic root of 51043385 is about 370.9481041323.

The spelling of 51043385 in words is "fifty-one million, forty-three thousand, three hundred eighty-five".