561106055 has 4 divisors (see below), whose sum is σ = 673327272. Its totient is φ = 448884840.

The previous prime is 561106037. The next prime is 561106061. The reversal of 561106055 is 550601165.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 561106055 - 2⁶ = 561105991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56110601 + ... + 56110610.

It is an arithmetic number, because the mean of its divisors is an integer number (168331818).

Almost surely, 2^561106055 is an apocalyptic number.

561106055 is a deficient number, since it is larger than the sum of its proper divisors (112221217).

561106055 is a wasteful number, since it uses less digits than its factorization.

561106055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112221216.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 561106055 is about 23687.6772816585. The cubic root of 561106055 is about 824.7993659648.

The spelling of 561106055 in words is "five hundred sixty-one million, one hundred six thousand, fifty-five".