51371500 has 48 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 20361600.

The previous prime is 51371471. The next prime is 51371521. The reversal of 51371500 is 517315.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63096 + ... + 63904.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^51371500 is an apocalyptic number.

51371500 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 51371500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56609280).

51371500 is an abundant number, since it is smaller than the sum of its proper divisors (61847060).

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

51371500 is a wasteful number, since it uses less digits than its factorization.

51371500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 51371500 is about 7167.3914362200. The cubic root of 51371500 is about 371.7412448848.

Adding to 51371500 its reverse (517315), we get a palindrome (51888815).

The spelling of 51371500 in words is "fifty-one million, three hundred seventy-one thousand, five hundred".