51110620 has 48 divisors (see below), whose sum is σ = 119605248. Its totient is φ = 18186560.

The previous prime is 51110597. The next prime is 51110659. The reversal of 51110620 is 2601115.

It is a happy number.

It is a super-2 number, since 2×51110620² = 5224590953568800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51110594 and 51110603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7869 + ... + 12811.

It is an arithmetic number, because the mean of its divisors is an integer number (2491776).

Almost surely, 2^51110620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51110620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59802624).

51110620 is an abundant number, since it is smaller than the sum of its proper divisors (68494628).

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

51110620 is a wasteful number, since it uses less digits than its factorization.

51110620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010 (or 5008 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 51110620 is about 7149.1691824995. The cubic root of 51110620 is about 371.1109052021.

Adding to 51110620 its reverse (2601115), we get a palindrome (53711735).

The spelling of 51110620 in words is "fifty-one million, one hundred ten thousand, six hundred twenty".