51440760 has 192 divisors, whose sum is σ = 193752000. Its totient is φ = 11593728.

The previous prime is 51440737. The next prime is 51440777. The reversal of 51440760 is 6704415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 345166 + ... + 345314.

It is an arithmetic number, because the mean of its divisors is an integer number (1009125).

Almost surely, 2^51440760 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 51440760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96876000).

51440760 is an abundant number, since it is smaller than the sum of its proper divisors (142311240).

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

51440760 is a wasteful number, since it uses less digits than its factorization.

51440760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 51440760 is about 7172.2214132025. The cubic root of 51440760 is about 371.9082326537.

The spelling of 51440760 in words is "fifty-one million, four hundred forty thousand, seven hundred sixty".