51457760 has 24 divisors (see below), whose sum is σ = 121569336. Its totient is φ = 20583040.

The previous prime is 51457729. The next prime is 51457771. The reversal of 51457760 is 6775415.

It is a self number, because there is not a number n which added to its sum of digits gives 51457760.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 160646 + ... + 160965.

It is an arithmetic number, because the mean of its divisors is an integer number (5065389).

Almost surely, 2^51457760 is an apocalyptic number.

It is an amenable number.

51457760 is an abundant number, since it is smaller than the sum of its proper divisors (70111576).

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

51457760 is a wasteful number, since it uses less digits than its factorization.

51457760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321626 (or 321618 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 51457760 is about 7173.4064432458. The cubic root of 51457760 is about 371.9491972093.

The spelling of 51457760 in words is "fifty-one million, four hundred fifty-seven thousand, seven hundred sixty".