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5149 = 19271
BaseRepresentation
bin1010000011101
321001201
41100131
5131044
635501
721004
oct12035
97051
105149
113961
122b91
132461
141c3b
1517d4
hex141d

5149 has 4 divisors (see below), whose sum is σ = 5440. Its totient is φ = 4860.

The previous prime is 5147. The next prime is 5153. The reversal of 5149 is 9415.

Adding to 5149 its product of digits (180), we get a square (5329 = 732).

It can be divided in two parts, 51 and 49, that added together give a square (100 = 102).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5149 - 21 = 5147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 271 = 5149 / (5 + 1 + 4 + 9).

It is a Duffinian number.

5149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5147) 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, 117 + ... + 154.

It is an arithmetic number, because the mean of its divisors is an integer number (1360).

It is an amenable number.

5149 is a deficient number, since it is larger than the sum of its proper divisors (291).

5149 is a wasteful number, since it uses less digits than its factorization.

5149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290.

The product of its digits is 180, while the sum is 19.

The square root of 5149 is about 71.7565328036. The cubic root of 5149 is about 17.2679572155.

The spelling of 5149 in words is "five thousand, one hundred forty-nine".

Divisors: 1 19 271 5149