51757280 has 48 divisors (see below), whose sum is σ = 124304544. Its totient is φ = 20359680.

The previous prime is 51757267. The next prime is 51757283. The reversal of 51757280 is 8275715.

It is a self number, because there is not a number n which added to its sum of digits gives 51757280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51757283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7109 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (2589678).

Almost surely, 2^51757280 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 51757280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62152272).

51757280 is an abundant number, since it is smaller than the sum of its proper divisors (72547264).

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

51757280 is a wasteful number, since it uses less digits than its factorization.

51757280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379 (or 5371 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 51757280 is about 7194.2532621531. The cubic root of 51757280 is about 372.6694693049.

The spelling of 51757280 in words is "fifty-one million, seven hundred fifty-seven thousand, two hundred eighty".