51025365 has 12 divisors (see below), whose sum is σ = 88444044. Its totient is φ = 27213504.

The previous prime is 51025343. The next prime is 51025367. The reversal of 51025365 is 56352015.

51025365 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 2 ways, for example, as 18740241 + 32285124 = 4329^2 + 5682^2 .

It is not a de Polignac number, because 51025365 - 2⁵ = 51025333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025367) 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 11 ways as a sum of consecutive naturals, for example, 566904 + ... + 566993.

It is an arithmetic number, because the mean of its divisors is an integer number (7370337).

Almost surely, 2^51025365 is an apocalyptic number.

It is an amenable number.

51025365 is a deficient number, since it is larger than the sum of its proper divisors (37418679).

51025365 is a wasteful number, since it uses less digits than its factorization.

51025365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133908 (or 1133905 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 51025365 is about 7143.2041130014. The cubic root of 51025365 is about 370.9044466855.

The spelling of 51025365 in words is "fifty-one million, twenty-five thousand, three hundred sixty-five".