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5018131 = 29173039
BaseRepresentation
bin10011001001001000010011
3100102221120201
4103021020103
52241040011
6255320031
760440056
oct23111023
910387521
105018131
112918218
121820017
131069111
14948a9d
15691cc1
hex4c9213

5018131 has 4 divisors (see below), whose sum is σ = 5191200. Its totient is φ = 4845064.

The previous prime is 5018129. The next prime is 5018137. The reversal of 5018131 is 1318105.

5018131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1318105 = 5263621.

It is a cyclic number.

It is not a de Polignac number, because 5018131 - 21 = 5018129 is a prime.

It is a super-2 number, since 2×50181312 = 50363277466322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5018099 and 5018108.

It is not an unprimeable number, because it can be changed into a prime (5018137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86491 + ... + 86548.

It is an arithmetic number, because the mean of its divisors is an integer number (1297800).

Almost surely, 25018131 is an apocalyptic number.

5018131 is a deficient number, since it is larger than the sum of its proper divisors (173069).

5018131 is a wasteful number, since it uses less digits than its factorization.

5018131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173068.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 5018131 is about 2240.1185236500. The cubic root of 5018131 is about 171.2040358287.

It can be divided in two parts, 50 and 18131, that added together give a palindrome (18181).

The spelling of 5018131 in words is "five million, eighteen thousand, one hundred thirty-one".

Divisors: 1 29 173039 5018131