55221342505 has 64 divisors (see below), whose sum is σ = 84230627328. Its totient is φ = 33862118400.

The previous prime is 55221342497. The next prime is 55221342521. The reversal of 55221342505 is 50524312255.

It is not a de Polignac number, because 55221342505 - 2³ = 55221342497 is a prime.

It is a super-3 number, since 3×55221342505³ (a number of 33 digits) contains 333 as substring.

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 63 ways as a sum of consecutive naturals, for example, 2053074 + ... + 2079796.

It is an arithmetic number, because the mean of its divisors is an integer number (1316103552).

Almost surely, 2^55221342505 is an apocalyptic number.

It is an amenable number.

55221342505 is a deficient number, since it is larger than the sum of its proper divisors (29009284823).

55221342505 is a wasteful number, since it uses less digits than its factorization.

55221342505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26926.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 55221342505 in words is "fifty-five billion, two hundred twenty-one million, three hundred forty-two thousand, five hundred five".