51107620 has 24 divisors (see below), whose sum is σ = 107513784. Its totient is φ = 20407296.

The previous prime is 51107603. The next prime is 51107653. The reversal of 51107620 is 2670115.

51107620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 527076 + 50580544 = 726^2 + 7112^2 .

It is a super-2 number, since 2×51107620² = 5223977644128800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51107591 and 51107600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11562 + ... + 15358.

It is an arithmetic number, because the mean of its divisors is an integer number (4479741).

Almost surely, 2^51107620 is an apocalyptic number.

It is an amenable number.

51107620 is an abundant number, since it is smaller than the sum of its proper divisors (56406164).

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

51107620 is a wasteful number, since it uses less digits than its factorization.

51107620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479 (or 4477 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 51107620 is about 7148.9593648307. The cubic root of 51107620 is about 371.1036441248.

Adding to 51107620 its reverse (2670115), we get a palindrome (53777735).

The spelling of 51107620 in words is "fifty-one million, one hundred seven thousand, six hundred twenty".