561055011 has 8 divisors (see below), whose sum is σ = 816080064. Its totient is φ = 340033320.

The previous prime is 561054983. The next prime is 561055039. The reversal of 561055011 is 110550165.

It is an interprime number because it is at equal distance from previous prime (561054983) and next prime (561055039).

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

It is not a de Polignac number, because 561055011 - 2²⁵ = 527500579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561055211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8500801 + ... + 8500866.

It is an arithmetic number, because the mean of its divisors is an integer number (102010008).

Almost surely, 2^561055011 is an apocalyptic number.

561055011 is a deficient number, since it is larger than the sum of its proper divisors (255025053).

561055011 is a wasteful number, since it uses less digits than its factorization.

561055011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17001681.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 561055011 is about 23686.5998193071. The cubic root of 561055011 is about 824.7743544510.

It can be divided in two parts, 56105 and 5011, that added together give a palindrome (61116).

The spelling of 561055011 in words is "five hundred sixty-one million, fifty-five thousand, eleven".