55284025561 has 32 divisors (see below), whose sum is σ = 60972526080. Its totient is φ = 49993977600.

The previous prime is 55284025549. The next prime is 55284025571. The reversal of 55284025561 is 16552048255.

It is a cyclic number.

It is not a de Polignac number, because 55284025561 - 2⁵ = 55284025529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55284025541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3067306 + ... + 3085276.

It is an arithmetic number, because the mean of its divisors is an integer number (1905391440).

Almost surely, 2^55284025561 is an apocalyptic number.

It is an amenable number.

55284025561 is a deficient number, since it is larger than the sum of its proper divisors (5688500519).

55284025561 is a wasteful number, since it uses less digits than its factorization.

55284025561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18145.

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 55284025561 in words is "fifty-five billion, two hundred eighty-four million, twenty-five thousand, five hundred sixty-one".