5271240 has 128 divisors (see below), whose sum is σ = 17740800. Its totient is φ = 1244160.

The previous prime is 5271223. The next prime is 5271281. The reversal of 5271240 is 421725.

It is a super-2 number, since 2×5271240² = 55571942275200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48306 + ... + 48414.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

Almost surely, 2^5271240 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 5271240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8870400).

5271240 is an abundant number, since it is smaller than the sum of its proper divisors (12469560).

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

5271240 is a wasteful number, since it uses less digits than its factorization.

5271240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 5271240 is about 2295.9181170068. The cubic root of 5271240 is about 174.0354003809.

Adding to 5271240 its reverse (421725), we get a palindrome (5692965).

The spelling of 5271240 in words is "five million, two hundred seventy-one thousand, two hundred forty".