5500402421 has 8 divisors (see below), whose sum is σ = 5692793400. Its totient is φ = 5308192960.

The previous prime is 5500402409. The next prime is 5500402429. The reversal of 5500402421 is 1242040055.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3131633521 + 2368768900 = 55961^2 + 48670^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5500402421 - 2⁶ = 5500402357 is a prime.

It is a super-2 number, since 2×5500402421² = 60508853585885322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5500402429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17795 + ... + 106383.

It is an arithmetic number, because the mean of its divisors is an integer number (711599175).

Almost surely, 2^5500402421 is an apocalyptic number.

It is an amenable number.

5500402421 is a deficient number, since it is larger than the sum of its proper divisors (192390979).

5500402421 is a wasteful number, since it uses less digits than its factorization.

5500402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90759.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 5500402421 is about 74164.6979431589. The cubic root of 5500402421 is about 1765.2172177133.

Adding to 5500402421 its reverse (1242040055), we get a palindrome (6742442476).

The spelling of 5500402421 in words is "five billion, five hundred million, four hundred two thousand, four hundred twenty-one".