51404125 has 8 divisors (see below), whose sum is σ = 64152504. Its totient is φ = 41123200.

The previous prime is 51404099. The next prime is 51404159. The reversal of 51404125 is 52140415.

51404125 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 181476 + 51222649 = 426^2 + 7157^2 .

It is not a de Polignac number, because 51404125 - 2¹³ = 51395933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51404096 and 51404105.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 205492 + ... + 205741.

It is an arithmetic number, because the mean of its divisors is an integer number (8019063).

Almost surely, 2^51404125 is an apocalyptic number.

It is an amenable number.

51404125 is a deficient number, since it is larger than the sum of its proper divisors (12748379).

51404125 is an equidigital number, since it uses as much as digits as its factorization.

51404125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411248 (or 411238 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51404125 is about 7169.6670076092. The cubic root of 51404125 is about 371.8199233453.

It can be divided in two parts, 51404 and 125, that added together give a square (51529 = 227²).

The spelling of 51404125 in words is "fifty-one million, four hundred four thousand, one hundred twenty-five".