5515533021 has 8 divisors (see below), whose sum is σ = 7354902304. Its totient is φ = 3676592880.

The previous prime is 5515532993. The next prime is 5515533041. The reversal of 5515533021 is 1203355155.

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

It is not a de Polignac number, because 5515533021 - 2²³ = 5507144413 is a prime.

It is a super-2 number, since 2×5515533021² = 60842209011482772882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5515533021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515533041) 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, 75991 + ... + 129636.

It is an arithmetic number, because the mean of its divisors is an integer number (919362788).

Almost surely, 2^5515533021 is an apocalyptic number.

It is an amenable number.

5515533021 is a deficient number, since it is larger than the sum of its proper divisors (1839369283).

5515533021 is a wasteful number, since it uses less digits than its factorization.

5515533021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214571.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 5515533021 is about 74266.6346416747. The cubic root of 5515533021 is about 1766.8343322815.

Adding to 5515533021 its reverse (1203355155), we get a palindrome (6718888176).

The spelling of 5515533021 in words is "five billion, five hundred fifteen million, five hundred thirty-three thousand, twenty-one".