51036500 has 48 divisors (see below), whose sum is σ = 112659456. Its totient is φ = 20196000.

The previous prime is 51036497. The next prime is 51036529. The reversal of 51036500 is 563015.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51005 + ... + 51995.

It is an arithmetic number, because the mean of its divisors is an integer number (2347072).

Almost surely, 2^51036500 is an apocalyptic number.

51036500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51036500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56329728).

51036500 is an abundant number, since it is smaller than the sum of its proper divisors (61622956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51036500 is a wasteful number, since it uses less digits than its factorization.

51036500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 51036500 is about 7143.9834826237. The cubic root of 51036500 is about 370.9314249058.

Adding to 51036500 its reverse (563015), we get a palindrome (51599515).

The spelling of 51036500 in words is "fifty-one million, thirty-six thousand, five hundred".