51263360 has 64 divisors (see below), whose sum is σ = 123526080. Its totient is φ = 20342784.

The previous prime is 51263357. The next prime is 51263369. The reversal of 51263360 is 6336215.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110489 + ... + 110951.

It is an arithmetic number, because the mean of its divisors is an integer number (1930095).

Almost surely, 2^51263360 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 51263360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61763040).

51263360 is an abundant number, since it is smaller than the sum of its proper divisors (72262720).

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

51263360 is a wasteful number, since it uses less digits than its factorization.

51263360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 51263360 is about 7159.8435737103. The cubic root of 51263360 is about 371.4802159803.

Adding to 51263360 its reverse (6336215), we get a palindrome (57599575).

The spelling of 51263360 in words is "fifty-one million, two hundred sixty-three thousand, three hundred sixty".