1220552055 has 12 divisors (see below), whose sum is σ = 2115623640. Its totient is φ = 650961072.

The previous prime is 1220552051. The next prime is 1220552059. The reversal of 1220552055 is 5502550221.

It is an interprime number because it is at equal distance from previous prime (1220552051) and next prime (1220552059).

It is not a de Polignac number, because 1220552055 - 2² = 1220552051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220552051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13561645 + ... + 13561734.

It is an arithmetic number, because the mean of its divisors is an integer number (176301970).

Almost surely, 2^1220552055 is an apocalyptic number.

1220552055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220552055 is a deficient number, since it is larger than the sum of its proper divisors (895071585).

1220552055 is a wasteful number, since it uses less digits than its factorization.

1220552055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27123390 (or 27123387 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 1220552055 is about 34936.4001436897. The cubic root of 1220552055 is about 1068.6908772055.

The spelling of 1220552055 in words is "one billion, two hundred twenty million, five hundred fifty-two thousand, fifty-five".