5515884521 has 4 divisors (see below), whose sum is σ = 6303868032. Its totient is φ = 4727901012.

The previous prime is 5515884511. The next prime is 5515884527. The reversal of 5515884521 is 1254885155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5515884521 - 2⁶ = 5515884457 is a prime.

It is a super-3 number, since 3×5515884521³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5515884527) 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, 393991745 + ... + 393991758.

It is an arithmetic number, because the mean of its divisors is an integer number (1575967008).

Almost surely, 2^5515884521 is an apocalyptic number.

It is an amenable number.

5515884521 is a deficient number, since it is larger than the sum of its proper divisors (787983511).

5515884521 is an equidigital number, since it uses as much as digits as its factorization.

5515884521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787983510.

The product of its digits is 320000, while the sum is 44.

The square root of 5515884521 is about 74269.0010771654. The cubic root of 5515884521 is about 1766.8718644096.

The spelling of 5515884521 in words is "five billion, five hundred fifteen million, eight hundred eighty-four thousand, five hundred twenty-one".