5502421 has 4 divisors (see below), whose sum is σ = 5539500. Its totient is φ = 5465344.

The previous prime is 5502403. The next prime is 5502437. The reversal of 5502421 is 1242055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 3294225 = 1486^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 5502421 - 2⁵ = 5502389 is a prime.

It is a super-2 number, since 2×5502421² = 60553273722482, which contains 22 as substring.

It is a Duffinian number.

5502421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5502401) 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, 18316 + ... + 18613.

It is an arithmetic number, because the mean of its divisors is an integer number (1384875).

Almost surely, 2^5502421 is an apocalyptic number.

It is an amenable number.

5502421 is a deficient number, since it is larger than the sum of its proper divisors (37079).

5502421 is a wasteful number, since it uses less digits than its factorization.

5502421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37078.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 5502421 is about 2345.7239820576. The cubic root of 5502421 is about 176.5433128862.

Adding to 5502421 its reverse (1242055), we get a palindrome (6744476).

The spelling of 5502421 in words is "five million, five hundred two thousand, four hundred twenty-one".