51270385 has 16 divisors (see below), whose sum is σ = 65314512. Its totient is φ = 38502400.

The previous prime is 51270367. The next prime is 51270397. The reversal of 51270385 is 58307215.

51270385 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 8 ways, for example, as 6754801 + 44515584 = 2599^2 + 6672^2 .

It is not a de Polignac number, because 51270385 - 2⁵ = 51270353 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 54015 + ... + 54955.

It is an arithmetic number, because the mean of its divisors is an integer number (4082157).

Almost surely, 2^51270385 is an apocalyptic number.

It is an amenable number.

51270385 is a deficient number, since it is larger than the sum of its proper divisors (14044127).

51270385 is a wasteful number, since it uses less digits than its factorization.

51270385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 51270385 is about 7160.3341402479. The cubic root of 51270385 is about 371.4971841054.

The spelling of 51270385 in words is "fifty-one million, two hundred seventy thousand, three hundred eighty-five".