561101061 has 8 divisors (see below), whose sum is σ = 748535904. Its totient is φ = 373866800.

The previous prime is 561101053. The next prime is 561101063. The reversal of 561101061 is 160101165.

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

It is a cyclic number.

It is not a de Polignac number, because 561101061 - 2³ = 561101053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561101063) 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 7 ways as a sum of consecutive naturals, for example, 43491 + ... + 54896.

It is an arithmetic number, because the mean of its divisors is an integer number (93566988).

Almost surely, 2^561101061 is an apocalyptic number.

It is an amenable number.

561101061 is a deficient number, since it is larger than the sum of its proper divisors (187434843).

561101061 is a wasteful number, since it uses less digits than its factorization.

561101061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100291.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 561101061 is about 23687.5718679649. The cubic root of 561101061 is about 824.7969189763.

The spelling of 561101061 in words is "five hundred sixty-one million, one hundred one thousand, sixty-one".