5259540 has 96 divisors (see below), whose sum is σ = 17329536. Its totient is φ = 1175040.

The previous prime is 5259533. The next prime is 5259547. The reversal of 5259540 is 459525.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5259533) and next prime (5259547).

It is a super-2 number, since 2×5259540² = 55325522023200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5259498 and 5259507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5259547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8274 + ... + 8886.

It is an arithmetic number, because the mean of its divisors is an integer number (180516).

Almost surely, 2^5259540 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 5259540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8664768).

5259540 is an abundant number, since it is smaller than the sum of its proper divisors (12069996).

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

5259540 is a wasteful number, since it uses less digits than its factorization.

5259540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 5259540 is about 2293.3687012777. The cubic root of 5259540 is about 173.9065424925.

The spelling of 5259540 in words is "five million, two hundred fifty-nine thousand, five hundred forty".