561088011 has 24 divisors (see below), whose sum is σ = 824055232. Its totient is φ = 339332400.

The previous prime is 561088007. The next prime is 561088019. The reversal of 561088011 is 110880165.

It is a happy number.

It is not a de Polignac number, because 561088011 - 2² = 561088007 is a prime.

It is a super-2 number, since 2×561088011² = 629639512175872242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561088011.

It is not an unprimeable number, because it can be changed into a prime (561088019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205920 + ... + 208626.

Almost surely, 2^561088011 is an apocalyptic number.

561088011 is a deficient number, since it is larger than the sum of its proper divisors (262967221).

561088011 is a wasteful number, since it uses less digits than its factorization.

561088011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 561088011 is about 23687.2964054575. The cubic root of 561088011 is about 824.7905245945.

It can be divided in two parts, 5 and 61088011, that added together give a palindrome (61088016).

The spelling of 561088011 in words is "five hundred sixty-one million, eighty-eight thousand, eleven".