5257840 has 80 divisors (see below), whose sum is σ = 14374080. Its totient is φ = 1751040.

The previous prime is 5257829. The next prime is 5257877. The reversal of 5257840 is 487525.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 22846 + ... + 23074.

It is an arithmetic number, because the mean of its divisors is an integer number (179676).

Almost surely, 2^5257840 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 5257840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7187040).

5257840 is an abundant number, since it is smaller than the sum of its proper divisors (9116240).

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

5257840 is a wasteful number, since it uses less digits than its factorization.

5257840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 5257840 is about 2292.9980375046. The cubic root of 5257840 is about 173.8878036560.

The spelling of 5257840 in words is "five million, two hundred fifty-seven thousand, eight hundred forty".