5169421 has 8 divisors (see below), whose sum is σ = 5274360. Its totient is φ = 5065728.

The previous prime is 5169419. The next prime is 5169427. The reversal of 5169421 is 1249615.

It can be written as a sum of positive squares in 4 ways, for example, as 373321 + 4796100 = 611^2 + 2190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5169421 - 2¹ = 5169419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5169421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5169427) 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 7 ways as a sum of consecutive naturals, for example, 13095 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (659295).

Almost surely, 2^5169421 is an apocalyptic number.

It is an amenable number.

5169421 is a deficient number, since it is larger than the sum of its proper divisors (104939).

5169421 is a wasteful number, since it uses less digits than its factorization.

5169421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its digits is 2160, while the sum is 28.

The square root of 5169421 is about 2273.6360746610. The cubic root of 5169421 is about 172.9075541592.

It can be divided in two parts, 51694 and 21, that added together give a palindrome (51715).

The spelling of 5169421 in words is "five million, one hundred sixty-nine thousand, four hundred twenty-one".