51124236500 has 24 divisors (see below), whose sum is σ = 111655333608. Its totient is φ = 20449694400.

The previous prime is 51124236439. The next prime is 51124236517. The reversal of 51124236500 is 563242115.

It can be written as a sum of positive squares in 4 ways, for example, as 1299746704 + 49824489796 = 36052^2 + 223214^2 .

It is a super-2 number, since 2×51124236500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51123737 + ... + 51124736.

It is an arithmetic number, because the mean of its divisors is an integer number (4652305567).

Almost surely, 2^51124236500 is an apocalyptic number.

51124236500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51124236500 is an abundant number, since it is smaller than the sum of its proper divisors (60531097108).

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

51124236500 is a wasteful number, since it uses less digits than its factorization.

51124236500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102248492 (or 102248480 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 51124236500 its reverse (563242115), we get a palindrome (51687478615).

The spelling of 51124236500 in words is "fifty-one billion, one hundred twenty-four million, two hundred thirty-six thousand, five hundred".