55023035221 has 16 divisors (see below), whose sum is σ = 68608027008. Its totient is φ = 42870168000.

The previous prime is 55023035143. The next prime is 55023035293. The reversal of 55023035221 is 12253032055.

It is not a de Polignac number, because 55023035221 - 2⁹ = 55023034709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55023035221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55023035021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726291 + ... + 798463.

It is an arithmetic number, because the mean of its divisors is an integer number (4288001688).

Almost surely, 2^55023035221 is an apocalyptic number.

It is an amenable number.

55023035221 is a deficient number, since it is larger than the sum of its proper divisors (13584991787).

55023035221 is a wasteful number, since it uses less digits than its factorization.

55023035221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82092.

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 55023035221 its reverse (12253032055), we get a palindrome (67276067276).

The spelling of 55023035221 in words is "fifty-five billion, twenty-three million, thirty-five thousand, two hundred twenty-one".