561048999 has 16 divisors (see below), whose sum is σ = 857859072. Its totient is φ = 319501728.

The previous prime is 561048991. The next prime is 561049001. The reversal of 561048999 is 999840165.

It is not a de Polignac number, because 561048999 - 2³ = 561048991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561048991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39439 + ... + 51744.

It is an arithmetic number, because the mean of its divisors is an integer number (53616192).

Almost surely, 2^561048999 is an apocalyptic number.

561048999 is a deficient number, since it is larger than the sum of its proper divisors (296810073).

561048999 is a wasteful number, since it uses less digits than its factorization.

561048999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91486.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 561048999 is about 23686.4729117697. The cubic root of 561048999 is about 824.7714084766.

The spelling of 561048999 in words is "five hundred sixty-one million, forty-eight thousand, nine hundred ninety-nine".