55061100561 has 8 divisors (see below), whose sum is σ = 75398984704. Its totient is φ = 35715308400.

The previous prime is 55061100547. The next prime is 55061100599. The reversal of 55061100561 is 16500116055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55061100561 - 2⁵ = 55061100529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55061100541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248022865 + ... + 248023086.

It is an arithmetic number, because the mean of its divisors is an integer number (9424873088).

Almost surely, 2^55061100561 is an apocalyptic number.

It is an amenable number.

55061100561 is a deficient number, since it is larger than the sum of its proper divisors (20337884143).

55061100561 is a wasteful number, since it uses less digits than its factorization.

55061100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496045991.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 55061100561 in words is "fifty-five billion, sixty-one million, one hundred thousand, five hundred sixty-one".