51306532 has 12 divisors (see below), whose sum is σ = 90338416. Its totient is φ = 25495560.

The previous prime is 51306529. The next prime is 51306547. The reversal of 51306532 is 23560315.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51306497 and 51306506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38694 + ... + 39997.

Almost surely, 2^51306532 is an apocalyptic number.

It is an amenable number.

51306532 is a deficient number, since it is larger than the sum of its proper divisors (39031884).

51306532 is a wasteful number, since it uses less digits than its factorization.

51306532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78858 (or 78856 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51306532 is about 7162.8578095618. The cubic root of 51306532 is about 371.5844687639.

Adding to 51306532 its reverse (23560315), we get a palindrome (74866847).

The spelling of 51306532 in words is "fifty-one million, three hundred six thousand, five hundred thirty-two".