51532725 has 24 divisors (see below), whose sum is σ = 86056992. Its totient is φ = 27208000.

The previous prime is 51532717. The next prime is 51532781. The reversal of 51532725 is 52723515.

51532725 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 51532725 - 2³ = 51532717 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51532692 and 51532701.

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 23 ways as a sum of consecutive naturals, for example, 4174 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (3585708).

Almost surely, 2^51532725 is an apocalyptic number.

It is an amenable number.

51532725 is a deficient number, since it is larger than the sum of its proper divisors (34524267).

51532725 is a wasteful number, since it uses less digits than its factorization.

51532725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917 (or 6912 counting only the distinct ones).

The product of its digits is 10500, while the sum is 30.

The square root of 51532725 is about 7178.6297438996. The cubic root of 51532725 is about 372.1297313160.

The spelling of 51532725 in words is "fifty-one million, five hundred thirty-two thousand, seven hundred twenty-five".