5166949 has 4 divisors (see below), whose sum is σ = 5172364. Its totient is φ = 5161536.

The previous prime is 5166919. The next prime is 5166961. The reversal of 5166949 is 9496615.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9496615 = 5 ⋅1899323.

It can be written as a sum of positive squares in 2 ways, for example, as 4389025 + 777924 = 2095^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166949 - 2¹⁹ = 4642661 is a prime.

It is a Duffinian number.

5166949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166919) 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, 852 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (1293091).

Almost surely, 2^5166949 is an apocalyptic number.

It is an amenable number.

5166949 is a deficient number, since it is larger than the sum of its proper divisors (5415).

5166949 is a wasteful number, since it uses less digits than its factorization.

5166949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5414.

The product of its digits is 58320, while the sum is 40.

The square root of 5166949 is about 2273.0923870358. The cubic root of 5166949 is about 172.8799884916.

The spelling of 5166949 in words is "five million, one hundred sixty-six thousand, nine hundred forty-nine".