51203124 has 96 divisors (see below), whose sum is σ = 153619200. Its totient is φ = 14446080.

The previous prime is 51203123. The next prime is 51203147. The reversal of 51203124 is 42130215.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 51203097 and 51203106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203123) by changing a digit.

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, 66904 + ... + 67664.

It is an arithmetic number, because the mean of its divisors is an integer number (1600200).

Almost surely, 2^51203124 is an apocalyptic number.

51203124 is a gapful number since it is divisible by the number (54) 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 51203124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76809600).

51203124 is an abundant number, since it is smaller than the sum of its proper divisors (102416076).

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

51203124 is a wasteful number, since it uses less digits than its factorization.

51203124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51203124 is about 7155.6358208059. The cubic root of 51203124 is about 371.3346587873.

Adding to 51203124 its reverse (42130215), we get a palindrome (93333339).

The spelling of 51203124 in words is "fifty-one million, two hundred three thousand, one hundred twenty-four".