51147325 has 12 divisors (see below), whose sum is σ = 63551488. Its totient is φ = 40834800.

The previous prime is 51147323. The next prime is 51147347. The reversal of 51147325 is 52374115.

It is a happy number.

51147325 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 51147325 - 2¹ = 51147323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51147293 and 51147302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51147323) 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, 12484 + ... + 16066.

Almost surely, 2^51147325 is an apocalyptic number.

It is an amenable number.

51147325 is a deficient number, since it is larger than the sum of its proper divisors (12404163).

51147325 is a wasteful number, since it uses less digits than its factorization.

51147325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164 (or 4159 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 51147325 is about 7151.7358032858. The cubic root of 51147325 is about 371.1997214879.

The spelling of 51147325 in words is "fifty-one million, one hundred forty-seven thousand, three hundred twenty-five".