5525815031221 has 8 divisors (see below), whose sum is σ = 5854318919064. Its totient is φ = 5197695137280.

The previous prime is 5525815031207. The next prime is 5525815031237. The reversal of 5525815031221 is 1221305185255.

It is a happy number.

5525815031221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 335688136996 + 5190126894225 = 579386^2 + 2278185^2 .

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 5525815031221 - 2⁹ = 5525815030709 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 (5525815031921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95968840 + ... + 96026401.

It is an arithmetic number, because the mean of its divisors is an integer number (731789864883).

Almost surely, 2^{5525815031221} is an apocalyptic number.

It is an amenable number.

5525815031221 is a deficient number, since it is larger than the sum of its proper divisors (328503887843).

5525815031221 is a wasteful number, since it uses less digits than its factorization.

5525815031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191996951.

The product of its (nonzero) digits is 120000, while the sum is 40.

The spelling of 5525815031221 in words is "five trillion, five hundred twenty-five billion, eight hundred fifteen million, thirty-one thousand, two hundred twenty-one".