5111640 has 64 divisors (see below), whose sum is σ = 17042400. Its totient is φ = 1362816.

The previous prime is 5111599. The next prime is 5111641. The reversal of 5111640 is 461115.

It is a super-2 number, since 2×5111640² = 52257726979200, 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 (5111641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287 + ... + 3446.

Almost surely, 2^5111640 is an apocalyptic number.

It is an amenable number.

5111640 is an abundant number, since it is smaller than the sum of its proper divisors (11930760).

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

5111640 is a wasteful number, since it uses less digits than its factorization.

5111640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4743 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 5111640 is about 2260.8936286345. The cubic root of 5111640 is about 172.2609164223.

Adding to 5111640 its reverse (461115), we get a palindrome (5572755).

The spelling of 5111640 in words is "five million, one hundred eleven thousand, six hundred forty".