5525204021 has 4 divisors (see below), whose sum is σ = 5526001344. Its totient is φ = 5524406700.

The previous prime is 5525203979. The next prime is 5525204029. The reversal of 5525204021 is 1204025255.

5525204021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-5525204021 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 (5525204029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388175 + ... + 402156.

It is an arithmetic number, because the mean of its divisors is an integer number (1381500336).

Almost surely, 2^5525204021 is an apocalyptic number.

It is an amenable number.

5525204021 is a deficient number, since it is larger than the sum of its proper divisors (797323).

5525204021 is an equidigital number, since it uses as much as digits as its factorization.

5525204021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797322.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 5525204021 is about 74331.7161176842. The cubic root of 5525204021 is about 1767.8663919572.

Adding to 5525204021 its reverse (1204025255), we get a palindrome (6729229276).

The spelling of 5525204021 in words is "five billion, five hundred twenty-five million, two hundred four thousand, twenty-one".