51231832 has 8 divisors (see below), whose sum is σ = 96059700. Its totient is φ = 25615912.

The previous prime is 51231821. The next prime is 51231839. The reversal of 51231832 is 23813215.

51231832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51231832² = 5249401220152448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51231797 and 51231806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51231839) 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 as a sum of consecutive naturals, namely, 3201982 + ... + 3201997.

Almost surely, 2^51231832 is an apocalyptic number.

It is an amenable number.

51231832 is a deficient number, since it is larger than the sum of its proper divisors (44827868).

51231832 is a wasteful number, since it uses less digits than its factorization.

51231832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403985 (or 6403981 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 51231832 is about 7157.6415110007. The cubic root of 51231832 is about 371.4040444216.

The spelling of 51231832 in words is "fifty-one million, two hundred thirty-one thousand, eight hundred thirty-two".