5515204021 has 8 divisors (see below), whose sum is σ = 5711673600. Its totient is φ = 5319153840.

The previous prime is 5515203997. The next prime is 5515204027. The reversal of 5515204021 is 1204025155.

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 5515204021 - 2⁵ = 5515203989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515204027) 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, 77961 + ... + 130798.

It is an arithmetic number, because the mean of its divisors is an integer number (713959200).

Almost surely, 2^5515204021 is an apocalyptic number.

It is an amenable number.

5515204021 is a deficient number, since it is larger than the sum of its proper divisors (196469579).

5515204021 is a wasteful number, since it uses less digits than its factorization.

5515204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209699.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 5515204021 is about 74264.4196166643. The cubic root of 5515204021 is about 1766.7992011919.

Adding to 5515204021 its reverse (1204025155), we get a palindrome (6719229176).

The spelling of 5515204021 in words is "five billion, five hundred fifteen million, two hundred four thousand, twenty-one".