5256540 has 144 divisors (see below), whose sum is σ = 17690400. Its totient is φ = 1257984.

The previous prime is 5256509. The next prime is 5256547. The reversal of 5256540 is 456525.

5256540 is a `hidden beast` number, since 5 + 2 + 5 + 654 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5256547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99154 + ... + 99206.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

Almost surely, 2^5256540 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 5256540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8845200).

5256540 is an abundant number, since it is smaller than the sum of its proper divisors (12433860).

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

5256540 is a wasteful number, since it uses less digits than its factorization.

5256540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 5256540 is about 2292.7145483029. The cubic root of 5256540 is about 173.8734712319.

The spelling of 5256540 in words is "five million, two hundred fifty-six thousand, five hundred forty".