51555360 has 96 divisors (see below), whose sum is σ = 170976960. Its totient is φ = 13022208.

The previous prime is 51555353. The next prime is 51555377. The reversal of 51555360 is 6355515.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 6294 + ... + 11946.

It is an arithmetic number, because the mean of its divisors is an integer number (1781010).

Almost surely, 2^51555360 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 51555360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85488480).

51555360 is an abundant number, since it is smaller than the sum of its proper divisors (119421600).

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

51555360 is a wasteful number, since it uses less digits than its factorization.

51555360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 51555360 is about 7180.2061251750. The cubic root of 51555360 is about 372.1842075316.

It can be divided in two parts, 51555 and 360, that added together give a palindrome (51915).

The spelling of 51555360 in words is "fifty-one million, five hundred fifty-five thousand, three hundred sixty".