51303060 has 72 divisors (see below), whose sum is σ = 156219336. Its totient is φ = 13628160.

The previous prime is 51302989. The next prime is 51303061. The reversal of 51303060 is 6030315.

It can be written as a sum of positive squares in 4 ways, for example, as 5008644 + 46294416 = 2238^2 + 6804^2 .

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 (51303061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75442 + ... + 76118.

It is an arithmetic number, because the mean of its divisors is an integer number (2169713).

Almost surely, 2^51303060 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 51303060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78109668).

51303060 is an abundant number, since it is smaller than the sum of its proper divisors (104916276).

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

51303060 is a wasteful number, since it uses less digits than its factorization.

51303060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 51303060 is about 7162.6154440958. The cubic root of 51303060 is about 371.5760866578.

Adding to 51303060 its reverse (6030315), we get a palindrome (57333375).

The spelling of 51303060 in words is "fifty-one million, three hundred three thousand, sixty".