5112781 has 8 divisors (see below), whose sum is σ = 5241024. Its totient is φ = 4986240.

The previous prime is 5112769. The next prime is 5112791. The reversal of 5112781 is 1872115.

5112781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5112781 - 2⁵ = 5112749 is a prime.

It is a super-2 number, since 2×5112781² = 52281059107922, which contains 22 as substring.

It is a Duffinian number.

5112781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5112791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7261 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (655128).

Almost surely, 2^5112781 is an apocalyptic number.

It is an amenable number.

5112781 is a deficient number, since it is larger than the sum of its proper divisors (128243).

5112781 is a wasteful number, since it uses less digits than its factorization.

5112781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its digits is 560, while the sum is 25.

The square root of 5112781 is about 2261.1459484076. The cubic root of 5112781 is about 172.2737326015.

Adding to 5112781 its reverse (1872115), we get a palindrome (6984896).

The spelling of 5112781 in words is "five million, one hundred twelve thousand, seven hundred eighty-one".