51250104 has 96 divisors (see below), whose sum is σ = 151412400. Its totient is φ = 16058880.

The previous prime is 51250097. The next prime is 51250117. The reversal of 51250104 is 40105215.

51250104 is a `hidden beast` number, since 512 + 50 + 104 = 666.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 62014 + ... + 62834.

Almost surely, 2^51250104 is an apocalyptic number.

51250104 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 51250104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75706200).

51250104 is an abundant number, since it is smaller than the sum of its proper divisors (100162296).

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

51250104 is a wasteful number, since it uses less digits than its factorization.

51250104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 51250104 is about 7158.9177953096. The cubic root of 51250104 is about 371.4481933280.

Adding to 51250104 its reverse (40105215), we get a palindrome (91355319).

The spelling of 51250104 in words is "fifty-one million, two hundred fifty thousand, one hundred four".