5164821 has 12 divisors (see below), whose sum is σ = 7899372. Its totient is φ = 3240576.

The previous prime is 5164807. The next prime is 5164849. The reversal of 5164821 is 1284615.

Added to its reverse (1284615) it gives a triangular number (6449436 = T₃₅₉₁).

It can be written as a sum of positive squares in 2 ways, for example, as 3651921 + 1512900 = 1911^2 + 1230^2 .

It is not a de Polignac number, because 5164821 - 2¹⁰ = 5163797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5164021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16726 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (658281).

Almost surely, 2^5164821 is an apocalyptic number.

5164821 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5164821 is a deficient number, since it is larger than the sum of its proper divisors (2734551).

5164821 is a wasteful number, since it uses less digits than its factorization.

5164821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33780 (or 33777 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 5164821 is about 2272.6242540288. The cubic root of 5164821 is about 172.8562517802.

Adding to 5164821 its reverse (1284615), we get a triangular number (6449436 = T₃₅₉₁).

The spelling of 5164821 in words is "five million, one hundred sixty-four thousand, eight hundred twenty-one".