561060091 has 8 divisors (see below), whose sum is σ = 585738144. Its totient is φ = 536405760.

The previous prime is 561060089. The next prime is 561060109. The reversal of 561060091 is 190060165.

561060091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 561060091 - 2¹ = 561060089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561060191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56521 + ... + 65701.

It is an arithmetic number, because the mean of its divisors is an integer number (73217268).

Almost surely, 2^561060091 is an apocalyptic number.

561060091 is a deficient number, since it is larger than the sum of its proper divisors (24678053).

561060091 is a wasteful number, since it uses less digits than its factorization.

561060091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 561060091 is about 23686.7070526910. The cubic root of 561060091 is about 824.7768437144.

The spelling of 561060091 in words is "five hundred sixty-one million, sixty thousand, ninety-one".