51504104250 has 48 divisors (see below), whose sum is σ = 139267103976. Its totient is φ = 13734427200.

The previous prime is 51504104243. The next prime is 51504104257. The reversal of 51504104250 is 5240140515.

51504104250 is a `hidden beast` number, since 5 + 1 + 504 + 104 + 2 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (51504104243) and next prime (51504104257).

It can be written as a sum of positive squares in 4 ways, for example, as 3822577929 + 47681526321 = 61827^2 + 218361^2 .

It is not an unprimeable number, because it can be changed into a prime (51504104257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11443107 + ... + 11447606.

Almost surely, 2^51504104250 is an apocalyptic number.

51504104250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51504104250 is an abundant number, since it is smaller than the sum of its proper divisors (87762999726).

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

51504104250 is a wasteful number, since it uses less digits than its factorization.

51504104250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22890736 (or 22890723 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 51504104250 its reverse (5240140515), we get a palindrome (56744244765).

The spelling of 51504104250 in words is "fifty-one billion, five hundred four million, one hundred four thousand, two hundred fifty".