51241260 has 144 divisors (see below), whose sum is σ = 172942560. Its totient is φ = 11289600.

The previous prime is 51241259. The next prime is 51241261. The reversal of 51241260 is 6214215.

It is an interprime number because it is at equal distance from previous prime (51241259) and next prime (51241261).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (51241261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84960 + ... + 85560.

It is an arithmetic number, because the mean of its divisors is an integer number (1200990).

Almost surely, 2^51241260 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 51241260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86471280).

51241260 is an abundant number, since it is smaller than the sum of its proper divisors (121701300).

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

51241260 is a wasteful number, since it uses less digits than its factorization.

51241260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 51241260 is about 7158.3000775324. The cubic root of 51241260 is about 371.4268257174.

Adding to 51241260 its reverse (6214215), we get a palindrome (57455475).

The spelling of 51241260 in words is "fifty-one million, two hundred forty-one thousand, two hundred sixty".