5131280 has 160 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 1505280.

The previous prime is 5131267. The next prime is 5131283. The reversal of 5131280 is 821315.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131283) 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, 301832 + ... + 301848.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

Almost surely, 2^5131280 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 5131280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8035200).

5131280 is an abundant number, since it is smaller than the sum of its proper divisors (10939120).

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

5131280 is a wasteful number, since it uses less digits than its factorization.

5131280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 5131280 is about 2265.2328798603. The cubic root of 5131280 is about 172.4812554021.

Adding to 5131280 its reverse (821315), we get a palindrome (5952595).

The spelling of 5131280 in words is "five million, one hundred thirty-one thousand, two hundred eighty".