51803525 has 12 divisors (see below), whose sum is σ = 65450052. Its totient is φ = 40659840.

The previous prime is 51803503. The next prime is 51803527. The reversal of 51803525 is 52530815.

51803525 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 6 ways, for example, as 279841 + 51523684 = 529^2 + 7178^2 .

It is not a de Polignac number, because 51803525 - 2¹⁰ = 51802501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51803527) 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, 18224 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (5454171).

Almost surely, 2^51803525 is an apocalyptic number.

It is an amenable number.

51803525 is a deficient number, since it is larger than the sum of its proper divisors (13646527).

51803525 is a wasteful number, since it uses less digits than its factorization.

51803525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39160 (or 39155 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 51803525 is about 7197.4665681752. The cubic root of 51803525 is about 372.7804293430.

The spelling of 51803525 in words is "fifty-one million, eight hundred three thousand, five hundred twenty-five".