215522301055 has 32 divisors (see below), whose sum is σ = 276119616960. Its totient is φ = 160926504960.

The previous prime is 215522301041. The next prime is 215522301077. The reversal of 215522301055 is 550103225512.

215522301055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-215522301055 is a prime.

It is a super-2 number, since 2×215522301055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18578517 + ... + 18590113.

It is an arithmetic number, because the mean of its divisors is an integer number (8628738030).

Almost surely, 2^215522301055 is an apocalyptic number.

215522301055 is a deficient number, since it is larger than the sum of its proper divisors (60597315905).

215522301055 is a wasteful number, since it uses less digits than its factorization.

215522301055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13419.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 215522301055 its reverse (550103225512), we get a palindrome (765625526567).

The spelling of 215522301055 in words is "two hundred fifteen billion, five hundred twenty-two million, three hundred one thousand, fifty-five".