51310260 has 120 divisors (see below), whose sum is σ = 169535520. Its totient is φ = 12954816.

The previous prime is 51310219. The next prime is 51310261. The reversal of 51310260 is 6201315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51310261) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29947 + ... + 31613.

It is an arithmetic number, because the mean of its divisors is an integer number (1412796).

Almost surely, 2^51310260 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 51310260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84767760).

51310260 is an abundant number, since it is smaller than the sum of its proper divisors (118225260).

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

51310260 is a wasteful number, since it uses less digits than its factorization.

51310260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707 (or 1696 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51310260 is about 7163.1180361627. The cubic root of 51310260 is about 371.5934684844.

Adding to 51310260 its reverse (6201315), we get a palindrome (57511575).

The spelling of 51310260 in words is "fifty-one million, three hundred ten thousand, two hundred sixty".