5181669 has 12 divisors (see below), whose sum is σ = 7569900. Its totient is φ = 3415104.

The previous prime is 5181667. The next prime is 5181677. The reversal of 5181669 is 9661815.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 4601025 = 762^2 + 2145^2 .

It is not a de Polignac number, because 5181669 - 2¹ = 5181667 is a prime.

It is a super-2 number, since 2×5181669² = 53699387251122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181667) 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 11 ways as a sum of consecutive naturals, for example, 2434 + ... + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (630825).

Almost surely, 2^5181669 is an apocalyptic number.

It is an amenable number.

5181669 is a deficient number, since it is larger than the sum of its proper divisors (2388231).

5181669 is a wasteful number, since it uses less digits than its factorization.

5181669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564 (or 6561 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 5181669 is about 2276.3279640684. The cubic root of 5181669 is about 173.0440040868.

It can be divided in two parts, 518 and 1669, that added together give a 7-th power (2187 = 3⁷).

The spelling of 5181669 in words is "five million, one hundred eighty-one thousand, six hundred sixty-nine".