561016651 has 8 divisors (see below), whose sum is σ = 604371600. Its totient is φ = 517690272.

The previous prime is 561016639. The next prime is 561016679. The reversal of 561016651 is 156610165.

561016651 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 561016651 - 2⁵ = 561016619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561016691) 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, 51576 + ... + 61498.

It is an arithmetic number, because the mean of its divisors is an integer number (75546450).

Almost surely, 2^561016651 is an apocalyptic number.

561016651 is a deficient number, since it is larger than the sum of its proper divisors (43354949).

561016651 is a wasteful number, since it uses less digits than its factorization.

561016651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14285.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 561016651 is about 23685.7900649313. The cubic root of 561016651 is about 824.7555570873.

The spelling of 561016651 in words is "five hundred sixty-one million, sixteen thousand, six hundred fifty-one".