51203385 has 24 divisors (see below), whose sum is σ = 93425280. Its totient is φ = 25870752.

The previous prime is 51203363. The next prime is 51203387. The reversal of 51203385 is 58330215.

51203385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51203385 - 2⁹ = 51202873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51203387) 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 23 ways as a sum of consecutive naturals, for example, 29089 + ... + 30798.

It is an arithmetic number, because the mean of its divisors is an integer number (3892720).

Almost surely, 2^51203385 is an apocalyptic number.

It is an amenable number.

51203385 is a deficient number, since it is larger than the sum of its proper divisors (42221895).

51203385 is a wasteful number, since it uses less digits than its factorization.

51203385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59917 (or 59914 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 51203385 is about 7155.6540581557. The cubic root of 51203385 is about 371.3352897265.

The spelling of 51203385 in words is "fifty-one million, two hundred three thousand, three hundred eighty-five".