561730755 has 8 divisors (see below), whose sum is σ = 898769232. Its totient is φ = 299589728.

The previous prime is 561730733. The next prime is 561730759. The reversal of 561730755 is 557037165.

It is a happy number.

561730755 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 561730755 - 2⁵ = 561730723 is a prime.

It is a super-2 number, since 2×561730755² = 631082882225740050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561730759) 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, 18724344 + ... + 18724373.

It is an arithmetic number, because the mean of its divisors is an integer number (112346154).

Almost surely, 2^561730755 is an apocalyptic number.

561730755 is a deficient number, since it is larger than the sum of its proper divisors (337038477).

561730755 is a wasteful number, since it uses less digits than its factorization.

561730755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37448725.

The product of its (nonzero) digits is 110250, while the sum is 39.

The square root of 561730755 is about 23700.8597945307. The cubic root of 561730755 is about 825.1053455927.

The spelling of 561730755 in words is "five hundred sixty-one million, seven hundred thirty thousand, seven hundred fifty-five".