51283500 has 96 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 13528000.

The previous prime is 51283499. The next prime is 51283511. The reversal of 51283500 is 538215.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268405 + ... + 268595.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^51283500 is an apocalyptic number.

51283500 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 51283500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

51283500 is an abundant number, since it is smaller than the sum of its proper divisors (99674580).

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

51283500 is a wasteful number, since it uses less digits than its factorization.

51283500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51283500 is about 7161.2498909059. The cubic root of 51283500 is about 371.5288578172.

The spelling of 51283500 in words is "fifty-one million, two hundred eighty-three thousand, five hundred".