5111280 has 120 divisors (see below), whose sum is σ = 17796480. Its totient is φ = 1313280.

The previous prime is 5111261. The next prime is 5111287. The reversal of 5111280 is 821115.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×5111280² = 52250366476800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22206 + ... + 22434.

It is an arithmetic number, because the mean of its divisors is an integer number (148304).

Almost surely, 2^5111280 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 5111280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8898240).

5111280 is an abundant number, since it is smaller than the sum of its proper divisors (12685200).

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

5111280 is a wasteful number, since it uses less digits than its factorization.

5111280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 5111280 is about 2260.8140126954. The cubic root of 5111280 is about 172.2568723591.

Adding to 5111280 its reverse (821115), we get a palindrome (5932395).

The spelling of 5111280 in words is "five million, one hundred eleven thousand, two hundred eighty".