51500732 has 18 divisors (see below), whose sum is σ = 91325808. Its totient is φ = 25412088.

The previous prime is 51500731. The next prime is 51500741. The reversal of 51500732 is 23700515.

It is a junction number, because it is equal to n+sod(n) for n = 51500698 and 51500707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23933 + ... + 25995.

It is an arithmetic number, because the mean of its divisors is an integer number (5073656).

Almost surely, 2^51500732 is an apocalyptic number.

It is an amenable number.

51500732 is a deficient number, since it is larger than the sum of its proper divisors (39825076).

51500732 is a wasteful number, since it uses less digits than its factorization.

51500732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225 (or 2144 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 51500732 is about 7176.4010478791. The cubic root of 51500732 is about 372.0527057553.

The spelling of 51500732 in words is "fifty-one million, five hundred thousand, seven hundred thirty-two".