561105461 has 8 divisors (see below), whose sum is σ = 641411904. Its totient is φ = 480836160.

The previous prime is 561105439. The next prime is 561105469. The reversal of 561105461 is 164501165.

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

It is not a de Polignac number, because 561105461 - 2¹⁸ = 560843317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561105469) 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, 41966 + ... + 53696.

It is an arithmetic number, because the mean of its divisors is an integer number (80176488).

Almost surely, 2^561105461 is an apocalyptic number.

It is an amenable number.

561105461 is a deficient number, since it is larger than the sum of its proper divisors (80306443).

561105461 is a wasteful number, since it uses less digits than its factorization.

561105461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18571.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 561105461 is about 23687.6647434904. The cubic root of 561105461 is about 824.7990749141.

The spelling of 561105461 in words is "five hundred sixty-one million, one hundred five thousand, four hundred sixty-one".